<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31305463</termId><termName>menarche</termName><termType>PT</termType><termNote><![CDATA[ The initial onset of menstruation in female humans and primates. In humans it usually occurs around age 13, close upon or one or two years following the onset of puberty. ]]></termNote><termCreatedDate>2026-03-30 20:22:10</termCreatedDate><relation><relationType>BT</relationType><termId>31298840</termId><termName>personal life events</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31327294</termId><termName>puberty</termName><termType>PT</termType></relation></term>  </Zthes>