<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>20098</termId><termName>BCG vaccine</termName><termType>PT</termType><termCreatedDate>0000-00-00 00:00:00</termCreatedDate><relation><relationType>BT</relationType><termId>18380</termId><termName>bacterial vaccines</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>18390</termId><termName>tuberculosis</termName><termType>PT</termType></relation></term>  </Zthes>