<a href="https://en.wikipedia.org/wiki/Age_and_female_fertility" class="extiw" title="wikipedia:Age and female fertility">Age and female fertility</a>.
<a href="//commons.wikimedia.org/wiki/User:Mikael_H%C3%A4ggstr%C3%B6m" title="User:Mikael Häggström">Mikael Häggström</a>, by work of Egbert R. te Velde and Peter L. Pearson
<p><span class="int-own-work" lang="en">Own work</span>, adapted from:
</p>
<ul><li><cite style="font-style:normal"> (2002). "The variability of female reproductive ageing". <i>Human Reproduction Update</i> <b>8</b> (2): 141–154. <a href="https://en.wikipedia.org/wiki/Digital_object_identifier" class="extiw" title="w:Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1093/humupd/8.2.141">10.1093/humupd/8.2.141</a>. <a href="https://en.wikipedia.org/wiki/International_Standard_Serial_Number" class="extiw" title="en:International Standard Serial Number">ISSN</a> <a rel="nofollow" class="external text" href="https://www.worldcat.org/issn/1355-4786">1355-4786</a>.</cite></li></ul>