<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/schema/zthes-1.0.dtd">  <Zthes><term><termId>46767</termId><termName>USO TERAPEUTICO DE LOS RADIOISOTOPOS</termName><termType>TT</termType><termLanguage>es-ES</termLanguage><termVocabulary>TESAURO DE MATERIAS DE SERBIULA</termVocabulary>	<termStatus>active</termStatus>	<termApproval>approved</termApproval>	<termSortkey>USO TERAPEUTICO DE LOS RADIOISOTOPOS</termSortkey><termCreatedDate>USO TERAPEUTICO DE LOS RADIOISOTOPOS</termCreatedDate><relation><relationType>UF</relationType><termId>46768</termId><termName>Isótopos radiactivos--Uso terapéutico</termName><termType>ND</termType></relation></term>  </Zthes>