<?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>2027-0119</journal-id>
<journal-title><![CDATA[Urología Colombiana]]></journal-title>
<abbrev-journal-title><![CDATA[Urol. Colomb.]]></abbrev-journal-title>
<issn>2027-0119</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Colombiana de Urología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2027-01192024000200068</article-id>
<article-id pub-id-type="doi">10.24875/ruc.23000101</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Estradiol/testosterone ratio: unveiling links between hormones, sexual function, and health in chronic non-communicable diseases]]></article-title>
<article-title xml:lang="es"><![CDATA[Relación estradiol/testosterona: descubriendo vínculos entre hormonas, función sexual y salud en enfermedades crónicas no transmisibles]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez-Gutiérrez]]></surname>
<given-names><![CDATA[María A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Huertas-Cañas]]></surname>
<given-names><![CDATA[Juan M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montoya-Osorio]]></surname>
<given-names><![CDATA[Juan M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bedoya-Ossa]]></surname>
<given-names><![CDATA[Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Pontificia Universidad Javeriana School of Medicine Department of Physiological Sciences]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2024</year>
</pub-date>
<volume>33</volume>
<numero>2</numero>
<fpage>68</fpage>
<lpage>74</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S2027-01192024000200068&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S2027-01192024000200068&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S2027-01192024000200068&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Objective: Determine the association and utility of measuring estradiol-to-testosterone ratio on erectile dysfunction (ED) and libido.  Materials and methods: This is a case-control study involving 32 adult male patients with chronic pathologies who consulted for sexual dysfunction. Cases defined as subjects with hypoactive sexual desire.  Results: Diabetes mellitus showed a significant LR of 6.58. Testosterone levels differed between cases and controls, yet no differences emerged for estradiol or estradiol-to-testosterone ratio. Subgroups defined by testosterone and LH levels were established. Low testosterone and inappropriately normal LH showed an OR of 13 and significant LR. Analysis of normal and inappropriately normal LH categories revealed significant differences in E/T ratio and adjusted testosterone. ROC curves assessed E/T ratio effectiveness for diagnosing hypogonadotropic hypogonadism and SD. A cutoff point of 5.98 for E/T ratio yielded 0.85 sensitivity and 0.79 specificity.  Conclusions: No significant differences were observed between cases and controls. Differences were observed when analyzed in subgroups based on LH response, indicating estradiol-to-testosterone ratio may be useful in studying inappropriate LH response. A larger sample size is warranted to be able to extrapolate our results.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Objetivo: Determinar asociación y utilidad de medir la relación estradiol-testosterona en disfunción eréctil y libido.  Método: Casos y controles, involucrando 32 pacientes con patologías crónicas que consultaron por disfunción sexual, definiendo casos como adultos con libido hipoactiva.  Resultados: En los sujetos con diabetes mellitus se evidenció likelihood ratio (LR) significativo (6,58). Hubo diferencias significativas en testosterona entre casos y controles, sin diferencias en estradiol o la relación estradiol-testosterona. Se establecieron subgrupos según testosterona y hormona luteinizante (LH). Testosterona baja y LH inapropiadamente normal, mostraron una odds ratio (OR) de 13 y LR significativo. Análisis de LH normal e inapropiadamente normal, reveló diferencias significativas en la relación estradiol-testosterona y testosterona corregida. Curvas ROC evaluaron la eficacia de relación estradiol-tes-tosterona para diagnosticar hipogonadismo hipogonadotrópico y disfunción eréctil (DE). Un punto de corte de 5,98 para la relación estradiol-testosterona arrojó una sensibilidad del 0,85 y una especificidad del 0,79.  Conclusiones: Se observaron diferencias al analizar en subgrupos basados en la respuesta de LH, sugiriendo que medir la relación estradiol-testosterona puede ser útil para estudiar la respuesta inapropiada de LH. Se requiere un tamaño de muestra más grande para extrapolar nuestros resultados.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Urology]]></kwd>
<kwd lng="en"><![CDATA[Erectile dysfunction]]></kwd>
<kwd lng="en"><![CDATA[Libido]]></kwd>
<kwd lng="en"><![CDATA[Chronic disease]]></kwd>
<kwd lng="es"><![CDATA[Urología]]></kwd>
<kwd lng="es"><![CDATA[Disfunción eréctil]]></kwd>
<kwd lng="es"><![CDATA[Libido]]></kwd>
<kwd lng="es"><![CDATA[Enfermedad crónica]]></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[O'Donnell]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Stanton]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[de Kretser]]></surname>
<given-names><![CDATA[DM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Endocrinology of the male reproductive system and spermatogenesis]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Feingold]]></surname>
<given-names><![CDATA[KR]]></given-names>
</name>
<name>
<surname><![CDATA[Anawalt]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Boyce]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Chrousos]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[de Herder]]></surname>
<given-names><![CDATA[WW]]></given-names>
</name>
<name>
<surname><![CDATA[Dhatariya]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<source><![CDATA[Endotext]]></source>
<year>2000</year>
<publisher-loc><![CDATA[South Dartmouth, MA ]]></publisher-loc>
<publisher-name><![CDATA[MDText.com, Inc]]></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[Carreau]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Lambard]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Delalande]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Denis-Galeraud]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Bilinska]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Bourguiba]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Aromatase expression and role of estrogens in male gonad : a review]]></article-title>
<source><![CDATA[Reprod Biol Endocrinol]]></source>
<year>2003</year>
<volume>1</volume>
<page-range>35</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[Trevisan]]></surname>
<given-names><![CDATA[CM]]></given-names>
</name>
<name>
<surname><![CDATA[Montagna]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[de Oliveira]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Christofolini]]></surname>
<given-names><![CDATA[DM]]></given-names>
</name>
<name>
<surname><![CDATA[Barbosa]]></surname>
<given-names><![CDATA[CP]]></given-names>
</name>
<name>
<surname><![CDATA[Crandall]]></surname>
<given-names><![CDATA[KA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Kisspeptin/GPR54 system: what do we know about its role in human reproduction?]]></article-title>
<source><![CDATA[Cell Physiol Biochem]]></source>
<year>2018</year>
<volume>49</volume>
<page-range>1259-76</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[Klein]]></surname>
<given-names><![CDATA[CE]]></given-names>
</name>
</person-group>
<source><![CDATA[The Hypothalamic-Pituitary-Gonadal Axis]]></source>
<year>2003</year>
<edition>6</edition>
<publisher-name><![CDATA[Holl-Frei Cancer Medicine]]></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[Skorupskaite]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[George]]></surname>
<given-names><![CDATA[JT]]></given-names>
</name>
<name>
<surname><![CDATA[Anderson]]></surname>
<given-names><![CDATA[RA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The kisspeptin-GnRH pathway in human reproductive health and disease]]></article-title>
<source><![CDATA[Hum Reprod Update]]></source>
<year>2014</year>
<volume>20</volume>
<page-range>485-500</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[Allen]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Doisy]]></surname>
<given-names><![CDATA[EA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Landmark article Sept 8, 1923. An ovarian hormone. Preliminary report on its localization, extraction and partial purification, and action in test animals. By Edgar Allen and Edward A. Doisy]]></article-title>
<source><![CDATA[JAMA]]></source>
<year>1983</year>
<volume>250</volume>
<page-range>2681-3</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[Robertson]]></surname>
<given-names><![CDATA[KM]]></given-names>
</name>
<name>
<surname><![CDATA[Simpson]]></surname>
<given-names><![CDATA[ER]]></given-names>
</name>
<name>
<surname><![CDATA[Lacham-Kaplan]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Jones]]></surname>
<given-names><![CDATA[ME]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Characterization of the fertility of male aromatase knockout mice]]></article-title>
<source><![CDATA[J Androl]]></source>
<year>2001</year>
<volume>22</volume>
<page-range>825-30</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[Castela]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Vendeira]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Costa]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Testosterone, endothelial health, and erectile function]]></article-title>
<source><![CDATA[ISRN Endocrinol]]></source>
<year>2011</year>
<page-range>839149</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[Hammes]]></surname>
<given-names><![CDATA[SR]]></given-names>
</name>
<name>
<surname><![CDATA[Levin]]></surname>
<given-names><![CDATA[ER]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Impact of estrogens in males and androgens in females]]></article-title>
<source><![CDATA[J Clin Invest]]></source>
<year>2019</year>
<volume>129</volume>
<page-range>1818-26</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="">
<source><![CDATA[Male Sexual Behavior during Aging - ScienceDirect]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="book">
<source><![CDATA[Testosterone-Induced Modulation of Nitric Oxide-cGMP Signaling Pathway and Androgenesis in the Rat Leydig Cells. Biology of Reproduction]]></source>
<year></year>
<publisher-name><![CDATA[Oxford Academic]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Burris]]></surname>
<given-names><![CDATA[AS]]></given-names>
</name>
<name>
<surname><![CDATA[Banks]]></surname>
<given-names><![CDATA[SM]]></given-names>
</name>
<name>
<surname><![CDATA[Carter]]></surname>
<given-names><![CDATA[CS]]></given-names>
</name>
<name>
<surname><![CDATA[Davidson]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
<name>
<surname><![CDATA[Sherins]]></surname>
<given-names><![CDATA[RJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A long-term, prospective study of the physiologic and behavioral effects of hormone replacement in untreated hypogonadal men]]></article-title>
<source><![CDATA[J Androl]]></source>
<year>1992</year>
<volume>13</volume>
<page-range>297-304</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[Anderson]]></surname>
<given-names><![CDATA[RA]]></given-names>
</name>
<name>
<surname><![CDATA[Bancroft]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Wu]]></surname>
<given-names><![CDATA[FC]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The effects of exogenous testosterone on sexuality and mood of normal men]]></article-title>
<source><![CDATA[J Clin Endocrinol Metab]]></source>
<year>1992</year>
<volume>75</volume>
<page-range>1503-7</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[Schulster]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Bernie]]></surname>
<given-names><![CDATA[AM]]></given-names>
</name>
<name>
<surname><![CDATA[Ramasamy]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The role of estradiol in male reproductive function]]></article-title>
<source><![CDATA[J Androl]]></source>
<year>2016</year>
<volume>18</volume>
<page-range>435-40</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="book">
<source><![CDATA[Gonadal Steroids and Body Composition, Strength, and Sexual Function in Men]]></source>
<year></year>
<publisher-name><![CDATA[NEJM]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wu]]></surname>
<given-names><![CDATA[FC]]></given-names>
</name>
<name>
<surname><![CDATA[Tajar]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Beynon]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
<name>
<surname><![CDATA[Pye]]></surname>
<given-names><![CDATA[SR]]></given-names>
</name>
<name>
<surname><![CDATA[Silman]]></surname>
<given-names><![CDATA[AJ]]></given-names>
</name>
<name>
<surname><![CDATA[Finn]]></surname>
<given-names><![CDATA[JD]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Identification of late-onset hypogonadism in middle-aged and elderly men]]></article-title>
<source><![CDATA[N Engl J Med]]></source>
<year>2010</year>
<volume>363</volume>
<page-range>123-35</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[Rosen]]></surname>
<given-names><![CDATA[RC]]></given-names>
</name>
<name>
<surname><![CDATA[Cappelleri]]></surname>
<given-names><![CDATA[JC]]></given-names>
</name>
<name>
<surname><![CDATA[Gendrano]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The international index of erectile function (IIEF): a state-of-the-science review]]></article-title>
<source><![CDATA[Int J Impot Res]]></source>
<year>2002</year>
<volume>14</volume>
<page-range>226-44</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[Zirkin]]></surname>
<given-names><![CDATA[BR]]></given-names>
</name>
<name>
<surname><![CDATA[Tenover]]></surname>
<given-names><![CDATA[JL]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Aging and declining testosterone: past, present, and hopes for the future]]></article-title>
<source><![CDATA[J Androl]]></source>
<year>2012</year>
<volume>33</volume>
<page-range>1111-8</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[Dunajska]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Milewicz]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Szymczak]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Jêdrzejuk]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Kuliczkowski]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Salomon]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluation of sex hormone levels and some metabolic factors in men with coronary atherosclerosis]]></article-title>
<source><![CDATA[Aging Male]]></source>
<year>2004</year>
<volume>7</volume>
<page-range>197-204</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[Carrillo-Larco]]></surname>
<given-names><![CDATA[RM]]></given-names>
</name>
<name>
<surname><![CDATA[Luza-Dueñas]]></surname>
<given-names><![CDATA[AC]]></given-names>
</name>
<name>
<surname><![CDATA[Urdániga-Hung]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Bernabé-Ortiz]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Diagnosis of erectile dysfunction can be used to improve screening for type 2 diabetes mellitus]]></article-title>
<source><![CDATA[Diabet Med]]></source>
<year>2018</year>
<volume>35</volume>
<page-range>1538-43</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[Castelló-Porcar]]></surname>
<given-names><![CDATA[AM]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez-Jabaloyas]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Testosterone/estradiol ratio, is it useful in the diagnosis of erectile dysfunction and low sexual desire?]]></article-title>
<source><![CDATA[Aging Male]]></source>
<year>2016</year>
<volume>19</volume>
<page-range>254-8</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[Wu]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Mao]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Jiang]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Ding]]></surname>
<given-names><![CDATA[Q]]></given-names>
</name>
<name>
<surname><![CDATA[Xu]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Levels of estradiol and testosterone are altered in Chinese men with sexual dysfunction]]></article-title>
<source><![CDATA[Andrology]]></source>
<year>2016</year>
<volume>4</volume>
<page-range>932-8</page-range></nlm-citation>
</ref>
<ref id="B23">
<label>23</label><nlm-citation citation-type="book">
<source><![CDATA[Relationship between Penile Erection and the Ratio of Estradiol to Testosterone: A Retrospective Study - Pan - 2020 - Andrologia]]></source>
<year></year>
<publisher-name><![CDATA[Wiley Online Library]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B24">
<label>24</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[El-Sakka]]></surname>
<given-names><![CDATA[AI]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Impact of the association between elevated oestradiol and low testosterone levels on erectile dysfunction severity]]></article-title>
<source><![CDATA[Asian J Androl]]></source>
<year>2013</year>
<volume>15</volume>
<page-range>492-6</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[Gates]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<name>
<surname><![CDATA[Mekary]]></surname>
<given-names><![CDATA[RA]]></given-names>
</name>
<name>
<surname><![CDATA[Chiu]]></surname>
<given-names><![CDATA[GR]]></given-names>
</name>
<name>
<surname><![CDATA[Ding]]></surname>
<given-names><![CDATA[EL]]></given-names>
</name>
<name>
<surname><![CDATA[Wittert]]></surname>
<given-names><![CDATA[GA]]></given-names>
</name>
<name>
<surname><![CDATA[Araujo]]></surname>
<given-names><![CDATA[AB]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Sex steroid hormone levels and body composition in men]]></article-title>
<source><![CDATA[J Clin Endocrinol Metab.]]></source>
<year>2013</year>
<volume>98</volume>
<page-range>2442-50</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[Fejes]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Koloszár]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Závaczki]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Daru]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Szöllösi]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Pál]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effect of body weight on testosterone/estradiol ratio in oligozoospermic patients]]></article-title>
<source><![CDATA[Arch Androl.]]></source>
<year>2006</year>
<volume>52</volume>
<page-range>97-102</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[Wu]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Shi]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Martin]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Vincent]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Heilbronn]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Wittert]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Age-related changes in estradiol and longitudinal associations with fat mass in men]]></article-title>
<source><![CDATA[PLoS One]]></source>
<year>2018</year>
<volume>13</volume>
</nlm-citation>
</ref>
<ref id="B28">
<label>28</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Baydilli]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Selvi]]></surname>
<given-names><![CDATA[1]]></given-names>
</name>
<name>
<surname><![CDATA[Akinsal]]></surname>
<given-names><![CDATA[EC]]></given-names>
</name>
<name>
<surname><![CDATA[Zararsiz]]></surname>
<given-names><![CDATA[GE]]></given-names>
</name>
<name>
<surname><![CDATA[Ekmekçioglu]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[How does body mass index affect semen parameters and reproductive hormones in infertile males?]]></article-title>
<source><![CDATA[Turk J Urol]]></source>
<year>2020</year>
<volume>46</volume>
<page-range>101-7</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[Iacono]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Prezioso]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Ruffo]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Illiano]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Romis]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Di Lauro]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Testosterone deficiency causes penile fibrosis and organic erectile dysfunction in aging men. Evaluating association among Age, TDS and ED]]></article-title>
<source><![CDATA[BMC Surg]]></source>
<year>2012</year>
<volume>12</volume>
<numero>^s1</numero>
<issue>^s1</issue>
<supplement>1</supplement>
<page-range>S24</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
