<?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>0186-2391</journal-id>
<journal-title><![CDATA[Acta pediátrica de México]]></journal-title>
<abbrev-journal-title><![CDATA[Acta pediatr. Méx]]></abbrev-journal-title>
<issn>0186-2391</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Pediatría]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0186-23912017000400219</article-id>
<article-id pub-id-type="doi">10.18233/apm38no4pp219-2271430</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Presentación de la menarca en madres e hijas. ¿Existe un adelanto?]]></article-title>
<article-title xml:lang="en"><![CDATA[Menarche in mothers and girls. Has age at menarche decline?]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rubinstein]]></surname>
<given-names><![CDATA[AV]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rahman]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Risso]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ocampo]]></surname>
<given-names><![CDATA[DC]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital de Niños Sup. Sor María Ludovica de La Plata Unidad de Ginecología Infanto Juvenil ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital de Niños Sup. Sor María Ludovica de La Plata Unidad de Ginecología Infanto Juvenil ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional de La Plata Facultad de Ciencias Veterinarias ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Hospital de Niños Sup. Sor María Ludovica de La Plata Unidad de Ginecología Infanto Juvenil ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Argentina</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2017</year>
</pub-date>
<volume>38</volume>
<numero>4</numero>
<fpage>219</fpage>
<lpage>227</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0186-23912017000400219&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0186-23912017000400219&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0186-23912017000400219&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  INTRODUCCIÓN: la menarca es un acontecimiento tardío en el desarrollo puberal y constituye el hito más significativo. Se ha descrito un adelanto progresivo en la edad de presentación de la menarca.  OBJETIVO: determinar la edad de aparición de la menarca y su relación con la edad de la menarca materna.  MATERIAL Y MÉTODOS: estudio retrospectivo, analítico, realizado entre mayo del 2014 y septiembre del 2015. Se estudiaron a niñas que presentaron su menarca con edad ginecológica menor a tres años. Se registró la edad de la menarca, seguro de salud y lugar de residencia de la niña y edad de la menarca de su madre, por el método de recuperación de datos. Se calcularon el índice de masa corporal (IMC) y el IMC/edad&#8211;Z score de la niña.  RESULTADOS: se incluyeron 250 niñas que presentaron menarca a una edad promedio de 11.6 ± 1.1 años; con un adelanto significativo de un año respecto a la de su madre: 12.6 ± 1.6 años (p &lt; 0.00001). Se observó una correlación negativa estadísticamente significativa entre la edad de la menarca de las niñas y su IMC/edad-Z score (p &lt; 0.00001); se mantuvo independiente del lugar de residencia (p = 0.3903) y del seguro de salud (p = 0.6067).  CONCLUSIÓN: en nuestra población, la menarca ocurrió un año antes en promedio en las hijas que en sus madres. Se observó una tendencia a la disminución de la menarca promedio en niñas con aumento del índice de masa corporal. No encontramos asociación entre la edad de la menarca y el nivel socioeconómico o lugar de residencia.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  INTRODUCTION: Menarche is the most significant milestone in female sexual maduration. It is a rather late event in puberty.  OBJECTIVE: To determine the menarcheal age and the relationship of menarcheal age between mothers and daughters.  MATERIAL AND METHODS: Retrospective, analytic study conducted between May 1st, 2014 and September 31st, 2015. Girls who had menarche with gynecological age less than three years were analyzed . The age of menarche of the girl and her mother, health insurance and place of residence was recorded by the method of retrieving data. BMI and BMI/age&#8211;Z score were calculated.  RESULTS: Two hundred and fifty girls were included. The mean age at menarche was 11.6 years. The mean menarcheal age of the mothers (12.6 years) was higher than the mean menarcheal age of the girls. Statistically significant difference was observed between the menarcheal age of the girls and mothers (p &lt; 0.00001). A statistically significant negative correlation between age of menarche of girls and BMI/age-Z score (p &lt; 0.00001) was observed and remained independent of the place of residence (p = 0.3903) and health insurance (p = 0.6067).  CONCLUSIONS: Menarche occurs earlier in the daughters than in their mothers in our population. A trend to decreased average menarche in girls with increased BMI was observed. The age of menarche of girls remained independent of their socioeconomic status or place of residence.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[pubertad]]></kwd>
<kwd lng="es"><![CDATA[menarca]]></kwd>
<kwd lng="es"><![CDATA[madre]]></kwd>
<kwd lng="es"><![CDATA[hija]]></kwd>
<kwd lng="en"><![CDATA[puberty]]></kwd>
<kwd lng="en"><![CDATA[menarche]]></kwd>
<kwd lng="en"><![CDATA[mother]]></kwd>
<kwd lng="en"><![CDATA[girl]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Azaretzky]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Boquete]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Llano]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Cap. 3.7 Pubertad normal]]></article-title>
<collab>Sociedad Argentina de Ginecología Infanto Juvenil</collab>
<source><![CDATA[Ginecología Infanto juvenil Un abordaje interdisciplinario]]></source>
<year>2015</year>
<page-range>137-43</page-range><publisher-loc><![CDATA[Buenos Aires ]]></publisher-loc>
<publisher-name><![CDATA[Ediciones Journal]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Karapanou]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Papadimitriou]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determinants of menarche]]></article-title>
<source><![CDATA[Reprod Biol Endocrinol]]></source>
<year>2010</year>
<volume>8</volume>
<page-range>115</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[Prado]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Jiménez]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
<name>
<surname><![CDATA[Rubén]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[La edad de la menarquía y aparición de caracteres sexuales secundarios; cambio secular en la población cubana (1972-2000)]]></article-title>
<source><![CDATA[Rev Esp Antropo Biol]]></source>
<year>2002</year>
<volume>23</volume>
<page-range>57-64</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Speroff]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Fritz]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Cap. 10 Anomalías de la pubertad y problemas del crecimiento]]></article-title>
<source><![CDATA[Endocrinología Ginecológica Clínica y Esterilidad 70 Edición]]></source>
<year>2007</year>
<page-range>361-99</page-range><publisher-name><![CDATA[Editorial Lippincott Williams Wilkins]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[McDowell]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Brody]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Hughes]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Has Age at Menarche Changed? Results from the National Health and Nutrition Examination Survey (NHANES) 1999-2004]]></article-title>
<source><![CDATA[Journal of Adolescent Health]]></source>
<year>2007</year>
<volume>40</volume>
<page-range>227-31</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[Valdés Gómez]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Espinosa Reyes]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Leyva Álvarez de la Campa]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Menarquía y factores asociados]]></article-title>
<source><![CDATA[Revista Cubana de Endocrinología]]></source>
<year>2013</year>
<volume>24</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>35-46</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[Hernández]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Unanue]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Gaete]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Edad de la menarquía y su relación con el nivel socioeconómico e índice de masa corporal]]></article-title>
<source><![CDATA[Rev Méd Chile]]></source>
<year>2007</year>
<volume>135</volume>
<page-range>1429-36</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[Lejarraga]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Age of menarche in urban Argentinian girls]]></article-title>
<source><![CDATA[Ann Hum Biol]]></source>
<year>1980</year>
<volume>7</volume>
<page-range>579-81</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Méndez]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
<name>
<surname><![CDATA[Siemazko]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Trastornos del ciclo menstrual durante el período puberal]]></article-title>
<source><![CDATA[Enfoque actual de la adolescente por el ginecólogo]]></source>
<year>2005</year>
<page-range>138-56</page-range><publisher-loc><![CDATA[Buenos Aires ]]></publisher-loc>
<publisher-name><![CDATA[Editorial Ascune]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lalys]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Pineau]]></surname>
<given-names><![CDATA[JC]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Age at menarche in a group of French schoolgirls]]></article-title>
<source><![CDATA[Pediatrics International]]></source>
<year>2014</year>
<volume>56</volume>
<page-range>601-4</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Azcárate]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Zambelli]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<source><![CDATA[El nivel socioeconómico en la argentina, 2015. Estratificación y variables]]></source>
<year>2015</year>
<publisher-name><![CDATA[Observatorio Social de SAIMO]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="book">
<source><![CDATA[WHO AnthroPlus for personal computers Manual: Software for assessing growth of the world´s children and adolescents]]></source>
<year>2009</year>
<publisher-loc><![CDATA[Geneva ]]></publisher-loc>
<publisher-name><![CDATA[WHO]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Basualdo-Farjat]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Grenóvero]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Minvielle]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<source><![CDATA[Nociones básicas de metodología de investigación en ciencias de la salud]]></source>
<year>2004</year>
<volume>2</volume>
<publisher-name><![CDATA[Gráfica Alemana. Editorial Atlante]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="book">
<collab>World Health Organization</collab>
<source><![CDATA[Training course on child growth assessment]]></source>
<year>2008</year>
<publisher-loc><![CDATA[Geneva ]]></publisher-loc>
<publisher-name><![CDATA[WHO]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[de Onis]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Onyango]]></surname>
<given-names><![CDATA[AW]]></given-names>
</name>
<name>
<surname><![CDATA[Borghi]]></surname>
</name>
<name>
<surname><![CDATA[Siyam]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Developmen of a WHO growth reference for school-aged children and adolescents]]></article-title>
<source><![CDATA[Bull World Health Organ]]></source>
<year>2007</year>
<volume>85</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>660-7</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Di Rienzo]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
<name>
<surname><![CDATA[Casanoves]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Balzarini]]></surname>
<given-names><![CDATA[MG]]></given-names>
</name>
<name>
<surname><![CDATA[Gonzalez]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Tablada]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Robledo]]></surname>
<given-names><![CDATA[CW]]></given-names>
</name>
</person-group>
<source><![CDATA[Infostat versión 2014]]></source>
<year></year>
<publisher-loc><![CDATA[Agentina ]]></publisher-loc>
<publisher-name><![CDATA[Group Infostat, FCA, Universidad Nacional de Córdoba]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tanner]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
<name>
<surname><![CDATA[Eveleth]]></surname>
<given-names><![CDATA[PB]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Variability between populations in growth and development at puberty]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Berenberg]]></surname>
<given-names><![CDATA[SR]]></given-names>
</name>
</person-group>
<source><![CDATA[Puberty. Biologyc and Psychosocial Components]]></source>
<year>1975</year>
<page-range>256-73</page-range><publisher-loc><![CDATA[Leiden, the Netherlands ]]></publisher-loc>
<publisher-name><![CDATA[Stenfert Kroese]]></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[Kaplowitz]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pubertal development in girls: Secular trends]]></article-title>
<source><![CDATA[Curr. Opin. Obstet. Gynecol]]></source>
<year>2006</year>
<volume>18</volume>
<page-range>487-91</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[Herman-Giddens]]></surname>
<given-names><![CDATA[ME]]></given-names>
</name>
<name>
<surname><![CDATA[Slora]]></surname>
<given-names><![CDATA[EJ]]></given-names>
</name>
<name>
<surname><![CDATA[Wasserman]]></surname>
<given-names><![CDATA[RC]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Secondary sexual characteristics and menses in young girls seen in office practice: A study from the pediatrics research in office settings]]></article-title>
<source><![CDATA[Pediatrics]]></source>
<year>1997</year>
<volume>99</volume>
<page-range>505-12</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[Herman-Giddens]]></surname>
<given-names><![CDATA[ME]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Recent data on pubertal milestones in United States children: The secular trend toward earlier development]]></article-title>
<source><![CDATA[Int. j. Androl]]></source>
<year>2006</year>
<volume>29</volume>
<page-range>241-6</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[Tehrani]]></surname>
<given-names><![CDATA[FR]]></given-names>
</name>
<name>
<surname><![CDATA[Mirmiran]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Zahedi]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Menarcheal age of mothers and daughters: Tehran Lipid and Glucose Study]]></article-title>
<source><![CDATA[Eastern Mediterranean Health Journal EMHJ]]></source>
<year>2010</year>
<volume>16</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>391-5</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[Parent]]></surname>
<given-names><![CDATA[AS]]></given-names>
</name>
<name>
<surname><![CDATA[Teilmann]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Juul]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Skakkebaek]]></surname>
<given-names><![CDATA[NE]]></given-names>
</name>
<name>
<surname><![CDATA[Toppari]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Bourguignon]]></surname>
<given-names><![CDATA[JP]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The timing of normal puberty and the age limits of sexual precocity: Variations around the world, secular trends, and changes after migration]]></article-title>
<source><![CDATA[Endocrine Reviews]]></source>
<year>2003</year>
<volume>24</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>668-93</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[Gaete]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Codner]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Adelanto de la pubertad en Chile y el mundo]]></article-title>
<source><![CDATA[Rev Chil Pediatr]]></source>
<year>2006</year>
<volume>77</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>456-65</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[Papadimitriou]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Fytanidis]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Douros]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Age at menarche in contemporary Greek girls: evidence for levelling-off of the secular]]></article-title>
<source><![CDATA[Act.Pediatrica]]></source>
<year>2008</year>
<volume>97</volume>
<page-range>812-5</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[Salvo]]></surname>
<given-names><![CDATA[ME]]></given-names>
</name>
<name>
<surname><![CDATA[Daldevich]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Vázquez]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Paccetti]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Varela]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Investigación exploratoria sobre salud sexual y reproductiva y prevalencia de violencia familiar y de pareja en la adolescencia]]></article-title>
<source><![CDATA[Rev Soc Arg Ginecol]]></source>
<year>2011</year>
<volume>18</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>80-91</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[Guillén]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Blanco Rodríguez]]></surname>
</name>
<name>
<surname><![CDATA[Martín]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez Carmela]]></surname>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Secular trend of menarcheal age in Spanish adolescents]]></article-title>
<source><![CDATA[Medicina Clínica]]></source>
<year>2008</year>
<volume>131</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>355-6</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[Ersoy]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Balkan]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Gunay]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Egemens]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The factors affecting the relation between the menarcheal age of mother and daughter]]></article-title>
<source><![CDATA[Child: Care, Health &amp; Development]]></source>
<year>2005</year>
<volume>31</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>303-8</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[Macias-Tomei]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Lopez-Blanco]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Espinoza]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Vasquez-Ramirez]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pubertal development in Caracas upper-middle-class boys and girls in a longitudinal context]]></article-title>
<source><![CDATA[Am J Hum Biol]]></source>
<year>2000</year>
<volume>12</volume>
<page-range>88-96</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[Carrillo]]></surname>
<given-names><![CDATA[JC]]></given-names>
</name>
<name>
<surname><![CDATA[Ireton]]></surname>
<given-names><![CDATA[MJ]]></given-names>
</name>
<name>
<surname><![CDATA[Caro]]></surname>
<given-names><![CDATA[LE]]></given-names>
</name>
<name>
<surname><![CDATA[Hauspie]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Morales]]></surname>
<given-names><![CDATA[JC]]></given-names>
</name>
<name>
<surname><![CDATA[Pagezy]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Growth Traits an sexual and sexual maturation in a simple of school-children from El Yopal, Casanare, Colombia]]></article-title>
<source><![CDATA[Acta Med Auxol]]></source>
<year>2001</year>
<volume>33</volume>
<page-range>105-11</page-range></nlm-citation>
</ref>
<ref id="B30">
<label>30</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Eveleth]]></surname>
<given-names><![CDATA[PB]]></given-names>
</name>
<name>
<surname><![CDATA[Tanner]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Cap 8. Sexual development]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Eveleth]]></surname>
<given-names><![CDATA[PB]]></given-names>
</name>
</person-group>
<source><![CDATA[Worldwide variation in human growth]]></source>
<year>1990</year>
<edition>2nd Ed</edition>
<page-range>161-75</page-range><publisher-loc><![CDATA[Cambridge, England ]]></publisher-loc>
<publisher-name><![CDATA[Cambridge University Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B31">
<label>31</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Remsberg]]></surname>
<given-names><![CDATA[KE]]></given-names>
</name>
<name>
<surname><![CDATA[Demerath]]></surname>
<given-names><![CDATA[EW]]></given-names>
</name>
<name>
<surname><![CDATA[Schubert]]></surname>
<given-names><![CDATA[CM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Early menarche and the development of cardiovascular disease risk factors in adolescent girls: the Fels Longitudinal Study]]></article-title>
<source><![CDATA[I Clin Endocrinol Metab]]></source>
<year>2005</year>
<volume>90</volume>
<page-range>2718-24</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[Hamilton]]></surname>
<given-names><![CDATA[AS]]></given-names>
</name>
<name>
<surname><![CDATA[Mack]]></surname>
<given-names><![CDATA[TM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Puberty and genetic susceptibility to breast cancer in a case-control study in twins]]></article-title>
<source><![CDATA[N Engl J Med]]></source>
<year>2003</year>
<volume>348</volume>
<page-range>2313-22</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
