<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2444-054X</journal-id>
<journal-title><![CDATA[Cirugía y cirujanos]]></journal-title>
<abbrev-journal-title><![CDATA[Cir. cir.]]></abbrev-journal-title>
<issn>2444-054X</issn>
<publisher>
<publisher-name><![CDATA[Academia Mexicana de Cirugía A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2444-054X2019000400436</article-id>
<article-id pub-id-type="doi">10.24875/ciru.18000691</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Expresión de la metaloproteinasa-9 en pacientes con formas leves y graves de enfermedad por reflujo gastroesofágico]]></article-title>
<article-title xml:lang="en"><![CDATA[Expression of metalloproteinase-9 in patients with mild and severe forms of gastroesophageal reflux disease]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montiel-Jarquín]]></surname>
<given-names><![CDATA[Álvaro J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vázquez de Lara-Cisneros]]></surname>
<given-names><![CDATA[Luis G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Colombo]]></surname>
<given-names><![CDATA[Aurelio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Solís-Mendoza]]></surname>
<given-names><![CDATA[Hugo A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Palmer-Márquez]]></surname>
<given-names><![CDATA[María L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Romero-Figueroa]]></surname>
<given-names><![CDATA[María S.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Hospital de Especialidades de Puebla ]]></institution>
<addr-line><![CDATA[Puebla ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Benemérita Universidad Autónoma de Puebla Facultad de Medicina ]]></institution>
<addr-line><![CDATA[Puebla ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Anáhuac Facultad de Ciencias de la Salud Centro de Investigación en Ciencias de la Salud (CICSA)]]></institution>
<addr-line><![CDATA[Campus Norte Huixquilucan]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2019</year>
</pub-date>
<volume>87</volume>
<numero>4</numero>
<fpage>436</fpage>
<lpage>442</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2444-054X2019000400436&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2444-054X2019000400436&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2444-054X2019000400436&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes: La enfermedad por reflujo gastroesofágico (ERGE) se desarrolla cuando el contenido estomacal ocasiona síntomas molestos o complicaciones. Las formas leves son esofagitis no erosiva y erosiva; las graves, esófago de Barrett y adenocarcinoma esofágico. Las metaloproteinasas de la matriz degradan componentes de la matriz extracelular, y tienen un papel importante en la invasión tumoral y la metástasis.  Objetivo: Relacionar la expresión de la metaloproteinasa-9 (MMP-9) en biopsias esofágicas de pacientes con formas leves y graves de ERGE.  Método: Estudio transversal. Se determinó la expresión de MMP-9 en biopsias esofágicas de pacientes con ERGE grave y leve. Las variables fueron edad, sexo, diagnóstico, tabaquismo, alcoholismo, índice de masa corporal (IMC) y expresión de MMP-9. Se realizó estadística descriptiva, concordancia para el diagnóstico y prueba de ji al cuadrado.  Resultados: 50 pacientes, 32 (64%) hombres y 18 (36%) mujeres, con edad media de 52.13 ± 14.75 años. Doce (24%) fumadores y 7 (14%) con alcoholismo. El IMC promedio fue de 26.71 ± 4.07 kg/m2 (rango: 15-33); 40 (80%) eran obesos. La concordancia entre observadores para el diagnóstico histopatológico fue de 1.0, y de 0.84 para esofagitis. Veintisiete (54%) tuvieron esofagitis, 16 (32%) esófago de Barrett y 7 (14%) cáncer de esófago. Hubo expresión de MMP-9 en cuatro pacientes con esofagitis, cinco con esófago de Barrett y cinco con cáncer esofágico. Encontramos diferencia estadísticamente significativa entre la expresión de MMP-9 y el tabaquismo (p = 0.011) y el diagnóstico histopatológico (p = 0.052).  Conclusiones: La expresión de MMP-9 es más frecuente en las formas graves que en las leves de ERGE.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Gastroesophageal reflux disease develops when the stomach contents causes troublesome symptoms and complications. Mild forms are non-erosive and erosive esophagitis, and severe forms are Barrett's esophagus and Esophageal adenocarcinoma. Matrix metalloproteinases are endopeptidases that can degrade components of the extracellular matrix, they play an important role in tumor invasion as well as in metastasis.  Objective: To correlate the expression of metalloproteinase 9 (MMP-9) in esophageal biopsies from patients with mild and severe forms of Gastroesophageal reflux disease.  Method: Cross-sectional study. The expression of MMP-9 was determined in biopsies of esophageal tissue of patients with mild and severe GRD. The included variables were age, sex, diagnosis, smoking and alcoholic habits, body mass index (BMI) and expression of MMP-9. Descriptive statistics was performed, Kappa for concordance in diagnosis as well as X2.  Results: There were 50 patients, 32 (64%) men and 18 (36%) women, mean age 52.13 ± 14.75 years of age. 12 (24%) with smoking and 7 (14%) with alcoholism. Average BMI was 26.71 ± 4.07 kg/m2 (15 to 33); 40 (80%) with obesity. The inter observer concordance for histopathological diagnosis was 1.0 and 0.84 for esophagitis degrees. 27 (54%) patients had esophagitis, 16 (32%) Barrett's esophagus and 7 (14%) esophageal cancer. There was expression of MMP-9 in four patients with esophagitis, five with Barrett's esophagus and five with esophageal cancer. Statistical significance was found between the expression of MMP-9 and smoking (p = 0.011) and histopathological diagnosis (p = 0.052).  Conclusions: The expression of MMP-9 is most common in severe forms compared to the mild forms of GRD.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Adenocarcinoma esofágico]]></kwd>
<kwd lng="es"><![CDATA[Enfermedad por reflujo gastroesofágico]]></kwd>
<kwd lng="es"><![CDATA[Esófago de Barrett]]></kwd>
<kwd lng="es"><![CDATA[Metaloproteinasa-9]]></kwd>
<kwd lng="en"><![CDATA[Barret's esophagus]]></kwd>
<kwd lng="en"><![CDATA[Esophageal adenocarcinoma]]></kwd>
<kwd lng="en"><![CDATA[Gastroesophageal reflux disease]]></kwd>
<kwd lng="en"><![CDATA[Metalloproteinase-9]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Montiel-Jarquín]]></surname>
<given-names><![CDATA[AJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Expresión de la metaloproteinasa 9 en pacientes con formas leves y graves de enfermedad por reflujo gastroesofágico]]></article-title>
<source><![CDATA[[Tesis de Maestría en Ciencias Médicas e Investigación, BUAP-IMSS]. Puebla, México]]></source>
<year>2011</year>
</nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Uscanga]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Nogueira-de-Rojas]]></surname>
<given-names><![CDATA[JR]]></given-names>
</name>
<name>
<surname><![CDATA[Gallardo]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Bernal-Reyes]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Ballesteros-Amozurrutia]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Gastroesophageal reflux disease. Gastroenterology Mexican association consensus. Mexican group for the GERD study]]></article-title>
<source><![CDATA[Rev Gastroenterol Mex]]></source>
<year>2002</year>
<volume>67</volume>
<page-range>216-23</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vakil]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[van]]></surname>
<given-names><![CDATA[Zanten SV]]></given-names>
</name>
<name>
<surname><![CDATA[Kahrilas]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Dent]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Jones]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[[The Montreal definition and classification of gastroesophageal reflux disease:a global, evidence-based consensus paper]]]></article-title>
<source><![CDATA[Z Gastroenterol]]></source>
<year>2007</year>
<volume>45</volume>
<page-range>1125-40</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[El-Serag]]></surname>
<given-names><![CDATA[HB]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Time trends of gastroesophageal reflux disease:a systematic review]]></article-title>
<source><![CDATA[Clin Gastroenterol Hepatol]]></source>
<year>2007</year>
<volume>5</volume>
<page-range>17-26</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Locke III]]></surname>
<given-names><![CDATA[GR]]></given-names>
</name>
<name>
<surname><![CDATA[Talley]]></surname>
<given-names><![CDATA[NJ]]></given-names>
</name>
<name>
<surname><![CDATA[Fett]]></surname>
<given-names><![CDATA[SL]]></given-names>
</name>
<name>
<surname><![CDATA[Zinsmeister]]></surname>
<given-names><![CDATA[AR]]></given-names>
</name>
<name>
<surname><![CDATA[Melton III]]></surname>
<given-names><![CDATA[LJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Prevalence and clinical spectrum of gastroesophageal reflux:a population-based study in Olmsted County, Minnesota]]></article-title>
<source><![CDATA[Gastroenterology]]></source>
<year>1997</year>
<volume>112</volume>
<page-range>1448-56</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nebel]]></surname>
<given-names><![CDATA[OT]]></given-names>
</name>
<name>
<surname><![CDATA[Fornes]]></surname>
<given-names><![CDATA[MF]]></given-names>
</name>
<name>
<surname><![CDATA[Castell]]></surname>
<given-names><![CDATA[DO]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Symptomatic gastroesophageal reflux:incidence and precipitating factors]]></article-title>
<source><![CDATA[Am J Dig Dis]]></source>
<year>1976</year>
<volume>21</volume>
<page-range>953-6</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Thompson]]></surname>
<given-names><![CDATA[WG]]></given-names>
</name>
<name>
<surname><![CDATA[Heaton]]></surname>
<given-names><![CDATA[KW]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Heartburn and globus in apparently healthy people]]></article-title>
<source><![CDATA[Can Med Assoc J]]></source>
<year>1982</year>
<volume>126</volume>
<page-range>46-8</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wienbeck]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Barnert]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Epidemiology of reflux disease and reflux esophagitis]]></article-title>
<source><![CDATA[Scand J Gastroenterol Suppl]]></source>
<year>1989</year>
<volume>156</volume>
<page-range>7-13</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[López-Colombo]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Morgan]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Bravo-González]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Montiel-Jarquín]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Méndez-Martínez]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Schmulson]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The epidemiology of functional gastrointestinal disorders in Mexico:a population-based study]]></article-title>
<source><![CDATA[Gastroenterol Res Pract]]></source>
<year>2012</year>
<volume>2012</volume>
<page-range>606174</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Peralta-Pedrero]]></surname>
<given-names><![CDATA[ML]]></given-names>
</name>
<name>
<surname><![CDATA[Lagunes-Espinosa]]></surname>
<given-names><![CDATA[AL]]></given-names>
</name>
<name>
<surname><![CDATA[Cruz-Avelar]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Juárez-Cedillo]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Rodríguez-Moctezuma]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[López-Carmona]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[[Frequency of gastroesophageal reflux disease in elderly patients attending a family medicine clinic]]]></article-title>
<source><![CDATA[Rev Med Inst Mex Seguro Soc]]></source>
<year>2007</year>
<volume>45</volume>
<page-range>447-52</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wong]]></surname>
<given-names><![CDATA[WM]]></given-names>
</name>
<name>
<surname><![CDATA[Lai]]></surname>
<given-names><![CDATA[KC]]></given-names>
</name>
<name>
<surname><![CDATA[Lam]]></surname>
<given-names><![CDATA[KF]]></given-names>
</name>
<name>
<surname><![CDATA[Hui]]></surname>
<given-names><![CDATA[WM]]></given-names>
</name>
<name>
<surname><![CDATA[Hu]]></surname>
<given-names><![CDATA[WH]]></given-names>
</name>
<name>
<surname><![CDATA[Lam]]></surname>
<given-names><![CDATA[CL]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Prevalence, clinical spectrum and health care utilization of gastro-oesophageal reflux disease in a Chinese population:a population-based study]]></article-title>
<source><![CDATA[Aliment Pharmacol Ther]]></source>
<year>2003</year>
<volume>18</volume>
<page-range>595-604</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hui]]></surname>
<given-names><![CDATA[TT]]></given-names>
</name>
<name>
<surname><![CDATA[Fass]]></surname>
<given-names><![CDATA[SM]]></given-names>
</name>
<name>
<surname><![CDATA[Giurgiu]]></surname>
<given-names><![CDATA[DI]]></given-names>
</name>
<name>
<surname><![CDATA[Iida]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Takagi]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Phillips]]></surname>
<given-names><![CDATA[EH]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Gastroesophageal disease and nausea:does fundoplication help or hurt?]]></article-title>
<source><![CDATA[Arch Surg]]></source>
<year>2000</year>
<volume>135</volume>
<page-range>545-9</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Armstrong]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Marshall]]></surname>
<given-names><![CDATA[JK]]></given-names>
</name>
<name>
<surname><![CDATA[Chiba]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Enns]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Fallone]]></surname>
<given-names><![CDATA[CA]]></given-names>
</name>
<name>
<surname><![CDATA[Fass]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Canadian Consensus Conference on the management of gastroesophageal reflux disease in adults —update 2004]]></article-title>
<source><![CDATA[Can J Gastroenterol]]></source>
<year>2005</year>
<volume>19</volume>
<page-range>15-35. 12</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Xiong]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Xu]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[He]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Hu]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Prevalence, risk factors and impact of gastroesophageal reflux disease symptoms:a population-based study in South China]]></article-title>
<source><![CDATA[Scand J Gastroenterol]]></source>
<year>2005</year>
<volume>40</volume>
<page-range>759-67</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Klauser]]></surname>
<given-names><![CDATA[AG]]></given-names>
</name>
<name>
<surname><![CDATA[Schindlbeck]]></surname>
<given-names><![CDATA[NE]]></given-names>
</name>
<name>
<surname><![CDATA[Muller-Lissner]]></surname>
<given-names><![CDATA[SA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Symptoms in gastro-oesophageal reflux disease]]></article-title>
<source><![CDATA[Lancet]]></source>
<year>1990</year>
<volume>335</volume>
<page-range>205-8</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lim]]></surname>
<given-names><![CDATA[SL]]></given-names>
</name>
<name>
<surname><![CDATA[Goh]]></surname>
<given-names><![CDATA[WT]]></given-names>
</name>
<name>
<surname><![CDATA[Lee]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
<name>
<surname><![CDATA[Ng]]></surname>
<given-names><![CDATA[TP]]></given-names>
</name>
<name>
<surname><![CDATA[Ho]]></surname>
<given-names><![CDATA[KY]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Changing prevalence of gastroesophageal reflux with changing time:longitudinal study in an Asian population]]></article-title>
<source><![CDATA[J Gastroenterol Hepatol]]></source>
<year>2005</year>
<volume>20</volume>
<page-range>995-1001</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Segal]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The gastro-oesophageal reflux disease complex in sub-Saharan Africa]]></article-title>
<source><![CDATA[Eur J Cancer Prev]]></source>
<year>2001</year>
<volume>10</volume>
<page-range>209-12</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Agreus]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Svardsudd]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Talley]]></surname>
<given-names><![CDATA[NJ]]></given-names>
</name>
<name>
<surname><![CDATA[Jones]]></surname>
<given-names><![CDATA[MP]]></given-names>
</name>
<name>
<surname><![CDATA[Tibblin]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Natural history of gastroesophageal reflux disease and functional abdominal disorders:a population-based study]]></article-title>
<source><![CDATA[Am J Gastroenterol]]></source>
<year>2001</year>
<volume>96</volume>
<page-range>2905-14</page-range></nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Flook]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Jones]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Vakil]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Approach to gastroesophageal reflux disease in primary care:putting the Montreal definition into practice]]></article-title>
<source><![CDATA[Can Fam Physician]]></source>
<year>2008</year>
<volume>54</volume>
<page-range>701-5</page-range></nlm-citation>
</ref>
<ref id="B20">
<label>20</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fass]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Fennerty]]></surname>
<given-names><![CDATA[MB]]></given-names>
</name>
<name>
<surname><![CDATA[Vakil]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Nonerosive reflux disease —current concepts and dilemmas]]></article-title>
<source><![CDATA[Am J Gastroenterol]]></source>
<year>2001</year>
<volume>96</volume>
<page-range>303-14</page-range></nlm-citation>
</ref>
<ref id="B21">
<label>21</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fass]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Hell]]></surname>
<given-names><![CDATA[RW]]></given-names>
</name>
<name>
<surname><![CDATA[Garewal]]></surname>
<given-names><![CDATA[HS]]></given-names>
</name>
<name>
<surname><![CDATA[Martinez]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Pulliam]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Wendel]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Correlation of oesophageal acid exposure with Barrett's oesophagus length]]></article-title>
<source><![CDATA[Gut]]></source>
<year>2001</year>
<volume>48</volume>
<page-range>310-3</page-range></nlm-citation>
</ref>
<ref id="B22">
<label>22</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fass]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Ofman]]></surname>
<given-names><![CDATA[JJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Gastroesophageal reflux disease —should we adopt a new conceptual framework?]]></article-title>
<source><![CDATA[Am J Gastroenterol]]></source>
<year>2002</year>
<volume>97</volume>
<page-range>1901-9</page-range></nlm-citation>
</ref>
<ref id="B23">
<label>23</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fass]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Sampliner]]></surname>
<given-names><![CDATA[RE]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Barrett's oesophagus:optimal strategies for prevention and treatment]]></article-title>
<source><![CDATA[Drugs]]></source>
<year>2003</year>
<volume>63</volume>
<page-range>555-64</page-range></nlm-citation>
</ref>
<ref id="B24">
<label>24</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kerkhof]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[van]]></surname>
<given-names><![CDATA[Dekken H]]></given-names>
</name>
<name>
<surname><![CDATA[Steyerberg]]></surname>
<given-names><![CDATA[EW]]></given-names>
</name>
<name>
<surname><![CDATA[Meijer]]></surname>
<given-names><![CDATA[GA]]></given-names>
</name>
<name>
<surname><![CDATA[Mulder]]></surname>
<given-names><![CDATA[AH]]></given-names>
</name>
<name>
<surname><![CDATA[de]]></surname>
<given-names><![CDATA[Bruïne A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Grading of dysplasia in Barrett's oesophagus:substantial interobserver variation between general and gastrointestinal pathologists]]></article-title>
<source><![CDATA[Histopathology]]></source>
<year>2007</year>
<volume>50</volume>
<page-range>920-7</page-range></nlm-citation>
</ref>
<ref id="B25">
<label>25</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sampliner]]></surname>
<given-names><![CDATA[RE]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Updated guidelines for the diagnosis, surveillance, and therapy of Barrett's esophagus]]></article-title>
<source><![CDATA[Am J Gastroenterol]]></source>
<year>2002</year>
<volume>97</volume>
<page-range>1888-95</page-range></nlm-citation>
</ref>
<ref id="B26">
<label>26</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pedrazzani]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Catalano]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Festini]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Zerman]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Tomezzoli]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Ruzzenente]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Endoscopic ablation of Barrett's esophagus using high power setting argon plasma coagulation:a prospective study]]></article-title>
<source><![CDATA[World J Gastroenterol]]></source>
<year>2005</year>
<volume>11</volume>
<page-range>1872-5</page-range></nlm-citation>
</ref>
<ref id="B27">
<label>27</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Munitiz]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez de]]></surname>
<given-names><![CDATA[Haro LF]]></given-names>
</name>
<name>
<surname><![CDATA[Ortiz]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<name>
<surname><![CDATA[Ruiz]]></surname>
<given-names><![CDATA[de AD]]></given-names>
</name>
<name>
<surname><![CDATA[Molina]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Bermejo]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Surgical treatment of high-grade dysplasia in Barrett's esophagus]]></article-title>
<source><![CDATA[Cir Esp]]></source>
<year>2007</year>
<volume>82</volume>
<page-range>214-8</page-range></nlm-citation>
</ref>
<ref id="B28">
<label>28</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pickens]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Orringer]]></surname>
<given-names><![CDATA[MB]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Geographical distribution and racial disparity in esophageal cancer]]></article-title>
<source><![CDATA[Ann Thorac Surg]]></source>
<year>2003</year>
<volume>76</volume>
<page-range>S1367-9</page-range></nlm-citation>
</ref>
<ref id="B29">
<label>29</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Van]]></surname>
<given-names><![CDATA[CE]]></given-names>
</name>
<name>
<surname><![CDATA[Vantrappen]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Epidemiology and clinical aspects of esophageal cancer]]></article-title>
<source><![CDATA[J Belge Radiol]]></source>
<year>1991</year>
<volume>74</volume>
<page-range>365-8</page-range></nlm-citation>
</ref>
<ref id="B30">
<label>30</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yamamoto]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Vinitketkumnuen]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Adachi]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Taniguchi]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Hirata]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Miyamoto]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Association of matrilysin-2 (MMP-26) expression with tumor progression and activation of MMP-9 in esophageal squamous cell carcinoma]]></article-title>
<source><![CDATA[Carcinogenesis]]></source>
<year>2004</year>
<volume>25</volume>
<page-range>2353-60</page-range></nlm-citation>
</ref>
<ref id="B31">
<label>31</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gu]]></surname>
<given-names><![CDATA[ZD]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[KN]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Gu]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[JY]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Clinical significance of matrix metalloproteinase-9 expression in esophageal squamous cell carcinoma]]></article-title>
<source><![CDATA[World J Gastroenterol]]></source>
<year>2005</year>
<volume>11</volume>
<page-range>871-4</page-range></nlm-citation>
</ref>
<ref id="B32">
<label>32</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Shima]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Sasaguri]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Kusukawa]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Yamana]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Fujita]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Kakegawa]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Production of matrix metalloproteinase-2 and metalloproteinase-3 related to malignant behavior of esophageal carcinoma. A clinicopathologic study]]></article-title>
<source><![CDATA[Cancer]]></source>
<year>1992</year>
<volume>70</volume>
<page-range>2747-53</page-range></nlm-citation>
</ref>
<ref id="B33">
<label>33</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Liabakk]]></surname>
<given-names><![CDATA[NB]]></given-names>
</name>
<name>
<surname><![CDATA[Talbot]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Smith]]></surname>
<given-names><![CDATA[RA]]></given-names>
</name>
<name>
<surname><![CDATA[Wilkinson]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Balkwill]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Matrix metalloprotease 2 (MMP-2) and matrix metalloprotease 9 (MMP-9) type IV collagenases in colorectal cancer]]></article-title>
<source><![CDATA[Cancer Res]]></source>
<year>1996</year>
<volume>56</volume>
<page-range>190-6</page-range></nlm-citation>
</ref>
<ref id="B34">
<label>34</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kamat]]></surname>
<given-names><![CDATA[AA]]></given-names>
</name>
<name>
<surname><![CDATA[Fletcher]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Gruman]]></surname>
<given-names><![CDATA[LM]]></given-names>
</name>
<name>
<surname><![CDATA[Mueller]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Lopez]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Landen Jr]]></surname>
<given-names><![CDATA[CN]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The clinical relevance of stromal matrix metalloproteinase expression in ovarian cancer]]></article-title>
<source><![CDATA[Clin Cancer Res]]></source>
<year>2006</year>
<volume>12</volume>
<page-range>1707-14</page-range></nlm-citation>
</ref>
<ref id="B35">
<label>35</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Galis]]></surname>
<given-names><![CDATA[ZS]]></given-names>
</name>
<name>
<surname><![CDATA[Sukhova]]></surname>
<given-names><![CDATA[GK]]></given-names>
</name>
<name>
<surname><![CDATA[Lark]]></surname>
<given-names><![CDATA[MW]]></given-names>
</name>
<name>
<surname><![CDATA[Libby]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Increased expression of matrix metalloproteinases and matrix degrading activity in vulnerable regions of human atherosclerotic plaques]]></article-title>
<source><![CDATA[J Clin Invest]]></source>
<year>1994</year>
<volume>94</volume>
<page-range>2493-503</page-range></nlm-citation>
</ref>
<ref id="B36">
<label>36</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Beranek]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Kolar]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Tschoplova]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Kankova]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Vasku]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Genetic variations and plasma levels of gelatinase A (matrix metalloproteinase-2) and gelatinase B (matrix metalloproteinase-9) in proliferative diabetic retinopathy]]></article-title>
<source><![CDATA[Mol Vis]]></source>
<year>2008</year>
<volume>14</volume>
<page-range>1114-21</page-range></nlm-citation>
</ref>
<ref id="B37">
<label>37</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Herszenyi]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Hritz]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Pregun]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Sipos]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Juhasz]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Molnar]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Alterations of glutathione S-transferase and matrix metalloproteinase-9 expressions are early events in esophageal carcinogenesis]]></article-title>
<source><![CDATA[World J Gastroenterol]]></source>
<year>2007</year>
<volume>13</volume>
<page-range>676-82</page-range></nlm-citation>
</ref>
<ref id="B38">
<label>38</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Grimm]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Lazariotou]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Kircher]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Stuermer]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Reiber]]></surname>
<given-names><![CDATA[Ch]]></given-names>
</name>
<name>
<surname><![CDATA[Höfelmayr]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[MMP-1 is a (pre-) invasive factor in Barrett-associated esophageal adenocarcinomas and is associated with positive lymph node status]]></article-title>
<source><![CDATA[J Translational Med]]></source>
<year>2010</year>
<volume>8</volume>
<page-range>99</page-range></nlm-citation>
</ref>
<ref id="B39">
<label>39</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kollarova]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Machova]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Horakova]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Janoutova]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Janout]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Epidemiology of esophageal cancer - an overview article]]></article-title>
<source><![CDATA[Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub]]></source>
<year>2007</year>
<volume>151</volume>
<page-range>17-20</page-range></nlm-citation>
</ref>
<ref id="B40">
<label>40</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Samantaray]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Sharma]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Chattopadhyaya]]></surname>
<given-names><![CDATA[TK]]></given-names>
</name>
<name>
<surname><![CDATA[Dattta]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Gupta]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Increased expression of MMP-2 and MMP-9 in esophageal squamous cell carcinoma]]></article-title>
<source><![CDATA[J Cancer Res Clin Oncol]]></source>
<year>2004</year>
<volume>130</volume>
<page-range>37-44</page-range></nlm-citation>
</ref>
<ref id="B41">
<label>41</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mukherjee]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Roth]]></surname>
<given-names><![CDATA[MJ]]></given-names>
</name>
<name>
<surname><![CDATA[Dawsey]]></surname>
<given-names><![CDATA[SM]]></given-names>
</name>
<name>
<surname><![CDATA[Yan]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Rodríguez-Canales]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Erickson]]></surname>
<given-names><![CDATA[HS]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Increased matrix metalloproteinase activation in esophageal squamous cell carcinoma]]></article-title>
<source><![CDATA[J Translational Med]]></source>
<year>2010</year>
<volume>8</volume>
<page-range>91</page-range></nlm-citation>
</ref>
<ref id="B42">
<label>42</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ohashi]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Nemoto]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Nakamura]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Nemori]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Increased expression of matrix metalloproteinase 7 and 9 and membrane type 1-matrix metalloproteinase in esophageal squamous cell carcinomas]]></article-title>
<source><![CDATA[Cancer]]></source>
<year>2000</year>
<volume>88</volume>
<page-range>2201-9</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
