<?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>0026-1742</journal-id>
<journal-title><![CDATA[Revista de la Facultad de Medicina (México)]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Fac. Med. (Méx.)]]></abbrev-journal-title>
<issn>0026-1742</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Facultad de Medicina]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0026-17422021000200031</article-id>
<article-id pub-id-type="doi">10.22201/fm.24484865e.2021.64.2.05</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Enfermedad de Von Willebrand como factor de riesgo para hemorragia postparto. Reporte de caso]]></article-title>
<article-title xml:lang="en"><![CDATA[Von Willebrand's Disease as a Risk Factor for Postpartum Hemorrhage. Case Report]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chavira Anaya]]></surname>
<given-names><![CDATA[Cynthia Fabiola]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arriaga López]]></surname>
<given-names><![CDATA[Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Álvarez Torres]]></surname>
<given-names><![CDATA[Alfredo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Mexicano del Seguro Social  ]]></institution>
<addr-line><![CDATA[Bahía de Banderas Nayarit]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Mexicano del Seguro Social  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2021</year>
</pub-date>
<volume>64</volume>
<numero>2</numero>
<fpage>31</fpage>
<lpage>37</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0026-17422021000200031&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0026-17422021000200031&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0026-17422021000200031&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La enfermedad de Von Willebrand es el trastorno hemorrágico hereditario más común, con mayor prevalencia en las mujeres en edad fértil. Existen 3 tipos principales, que resultan en una deficiencia cuantitativa o cualitativa del factor de Von Willebrand y en casos graves, también del factor VIII de la coagulación. Su incidencia en el embarazo es relativamente infrecuente; sin embargo, hay reportes a nivel mundial donde se ha considerado un factor de riesgo para hemorragia durante la resolución del embarazo. Presentamos el caso de una paciente de 20 años de edad, secundigesta, con aborto previo, que cursó embarazo de término, con diagnóstico de enfermedad de Von Willebrand desde los 12 años, manejada con desmopresina nasal únicamente ante la aparición de eventos hemorrágicos. Se finalizó la gestación vía abdominal debido a inducción fallida, y a pesar del manejo profiláctico hematológico y anestésico preoperatorio, presentó hemorragia postparto de acuerdo a las definiciones actuales basadas en lineamientos tanto nacionales como internacionales, atribuyendo la causa del sangrado a la coagulopatía de la paciente.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The Von Willebrand´s disease is the most common inherited bleeding disorder, with higher prevalence in women in fertile age. There are three principle types, that are caused by either a quantitative or qualitative defect in von Willebrand factor and in severe cases, the coagulation factor VIII is affected too. The incidence in pregnancy is relatively infrequent, however there are worldwide reports where it has been considered a risk factor for bleeding during the resolution of pregnancy. We present the case of a 20-year-old woman on her second pregnancy, with a previous abortion, who had a full-term pregnancy with a diagnosis of Von Willebrand disease since she was twelve years old, treated with nasal desmopressin only in the presence of hemorrhagic events. Gestation was terminated via abdominal route due to failed induction, and in spite of preoperative hematologic and anesthetic prophylactic management, she presented postpartum hemorrhage, according to current definitions based on national and international guidelines, attributing the cause of the bleeding to the patient's coagulopathy.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Enfermedad de Von Willebrand]]></kwd>
<kwd lng="es"><![CDATA[embarazo]]></kwd>
<kwd lng="es"><![CDATA[hemorragia postparto]]></kwd>
<kwd lng="en"><![CDATA[Von Willebrand´s disease]]></kwd>
<kwd lng="en"><![CDATA[pregnancy]]></kwd>
<kwd lng="en"><![CDATA[postpartum hemorrhage]]></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[Reynen]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[James]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Von Willebrand Disease and Pregnancy: A Review of Evidence and Expert Opinion]]></article-title>
<source><![CDATA[Semin Thromb Hemost]]></source>
<year>2016</year>
<volume>42</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>717-23</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<collab>Committee Opinion</collab>
<article-title xml:lang=""><![CDATA[Von Willebrand Disease in Women]]></article-title>
<source><![CDATA[The American College of Obstetricians and Gynecologist]]></source>
<year>2013</year>
<volume>580</volume>
<page-range>1-6</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[Simionescu]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Biunoiu]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Berbec]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Von Willebrand Disease type 2 in pregnancy: A critical clinical association]]></article-title>
<source><![CDATA[Transfus Apheresis Sci]]></source>
<year>2017</year>
<page-range>1-3</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[Espitia]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Manejo de la enfermedad de Von Willebrand en Ginecología y obstetricia: Revisión Cualitativa de la literatura]]></article-title>
<source><![CDATA[Rev Colomb Obstet Ginecol]]></source>
<year>2010</year>
<volume>61</volume>
<page-range>151-9</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[Majluf]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Velez]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[García]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Berges]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[López]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Von Willebrand Disease in México: A pilot study]]></article-title>
<source><![CDATA[Haemophilia]]></source>
<year>2013</year>
<volume>19</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>231-5</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[Ch]]></surname>
<given-names><![CDATA[Roth]]></given-names>
</name>
<name>
<surname><![CDATA[Syed]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Von Willebrand Disease in Pregnancy]]></article-title>
<source><![CDATA[Nur Womens]]></source>
<year>2016</year>
<volume>20</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>501-5</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[Woods]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Blanco]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Kempfer]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Paiva]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Bermejo]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Sánchez]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Factor von Willebrand y Enfermedad de von Willebrand: nuevos enfoques diagnósticos]]></article-title>
<source><![CDATA[Acta Bioquím Clín Latinoam]]></source>
<year>2016</year>
<volume>50</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>273-89</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[James]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Von Willebrand disease in women: awareness and diagnosis]]></article-title>
<source><![CDATA[Thromb Res]]></source>
<year>2009</year>
<volume>124</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>7-10</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[Ojeda]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Rodríguez]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Estepa]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Piña]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Cabeza]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Cambios fisiológicos durante el embarazo. Su importancia para el anestesiólogo]]></article-title>
<source><![CDATA[MediSur]]></source>
<year>2011</year>
<volume>9</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>484-91</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[Schneppenheim]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The pathophysiology of von Willebrand disease: therapeutic implications]]></article-title>
<source><![CDATA[Thromb Res]]></source>
<year>2011</year>
<volume>128</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>3-7</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[Purizaca]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Modificaciones fisiológicas en el embarazo]]></article-title>
<source><![CDATA[Rev Per Ginecol Obstet]]></source>
<year>2010</year>
<volume>56</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>57-69</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[Pacheco]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Constantine]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Saade]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Mucowski]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Hankins]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Sciscione]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Von Willebrand Disease in pregnancy]]></article-title>
<source><![CDATA[Am J Obstet Gynecol]]></source>
<year>2010</year>
<volume>203</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>194-200</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[Govorov]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Logren]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Chaireti]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Holmstrom]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Bremme]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Mints]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Postpartum Hemorrhage in Women with Von Willebrand Disease: A Retrospective Observational Study]]></article-title>
<source><![CDATA[PlosONE]]></source>
<year>2016</year>
<volume>11</volume>
<numero>10</numero>
<issue>10</issue>
<page-range>1-14</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[Huq]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Kadir]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Management of pregnancy, labour and delivery in women with inherited bleeding disorders]]></article-title>
<source><![CDATA[Haemophilia]]></source>
<year>2011</year>
<volume>17</volume>
<page-range>20-30</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[James]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Jamison]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Bleeding events and other complications during pregnancy and childbirth in women with Von Willebrand Disease]]></article-title>
<source><![CDATA[J Thromb Haemost]]></source>
<year>2007</year>
<volume>5</volume>
<page-range>1165-9</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[James]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Kouides]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Abdul]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Edlund]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Federici]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Halimeh]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Von Willebrand Disease and other bleeding disorders in women: consensus on diagnosis and management from an international expert panel]]></article-title>
<source><![CDATA[Am J Obstet Gynecol]]></source>
<year>2009</year>
<volume>201</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>12-8</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="book">
<collab>Prevención y Manejo de la Hemorragia Obstétrica en el primero, segundo y tercer nivel de atención. Resumen de Evidencias y Recomendaciones</collab>
<source><![CDATA[Guía de Práctica clínica de enfermería. México]]></source>
<year>2017</year>
<publisher-name><![CDATA[Secretaría de Salud]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Borovac]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Pacagnella]]></surname>
<given-names><![CDATA[RC]]></given-names>
</name>
<name>
<surname><![CDATA[Cecatti]]></surname>
<given-names><![CDATA[JG]]></given-names>
</name>
<name>
<surname><![CDATA[Miller]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Ayadi]]></surname>
<given-names><![CDATA[AM]]></given-names>
</name>
<name>
<surname><![CDATA[Souza]]></surname>
<given-names><![CDATA[JP]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Postpartum hemorrhage: new in- sights for definition and diagnosis]]></article-title>
<source><![CDATA[Am J Obstet Gynecol]]></source>
<year>2018</year>
<volume>219</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>162-8</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[Guerrero]]></surname>
<given-names><![CDATA[MC]]></given-names>
</name>
<name>
<surname><![CDATA[Escárcega]]></surname>
<given-names><![CDATA[LR]]></given-names>
</name>
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[OA]]></given-names>
</name>
<name>
<surname><![CDATA[Palomares]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Gutiérrez]]></surname>
<given-names><![CDATA[CH]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Utilidad del índice de choque como valor predictivo para el requerimiento de trasfusión en hemorragia obstétrica]]></article-title>
<source><![CDATA[Ginecol Obstet Mex]]></source>
<year>2018</year>
<volume>86</volume>
<numero>10</numero>
<issue>10</issue>
<page-range>665-74</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[Chee]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Townend]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Crowther]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Smith]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Watson]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Assessment of von Willebrand disease as a risk factor for primary postpartum haemorrhage]]></article-title>
<source><![CDATA[Haemophilia]]></source>
<year>2012</year>
<page-range>1-5</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[Corona]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[García]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Camarena]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[López]]></surname>
<given-names><![CDATA[LJ]]></given-names>
</name>
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Fajardo]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Indicaciones del factor VII recombinante activado en hemorragia obstétrica grave]]></article-title>
<source><![CDATA[Ginecol Obstet Mex]]></source>
<year>2018</year>
<volume>86</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>779-86</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[McLaughlin]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Kerr]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Management of Type 2B von Willebrand Disease during Pregnancy]]></article-title>
<source><![CDATA[Acta Haematol]]></source>
<year>2017</year>
<volume>137</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>89-92</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
