<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>20057</termId><termName>psychotropic drugs</termName><termType>PT</termType><termCreatedDate>0000-00-00 00:00:00</termCreatedDate><relation><relationType>BT</relationType><termId>18340</termId><termName>drugs</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>20059</termId><termName>antidepressive agents</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>18610</termId><termName>hallucinogens</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>20058</termId><termName>tranquilizing agents</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>19518</termId><termName>psychology</termName><termType>PT</termType></relation></term>  </Zthes>