<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
	mads.xsd"><authority><topic authority="https://r020.com.ar/tematres/demo/">02. Sistemas de clasificación y tesauros: estructura y construcción</topic></authority><related type="narrower"><topic>Descriptores</topic></related><related type="narrower"><topic>Tesauro de Medicina</topic></related><related type="narrower"><topic>TESAURO MULTILINGÜE</topic></related><related type="narrower"><topic>Vocabulario controlado</topic></related> <note type="source" xml:lang="es"> Fuente: [Wikipedia (EN)] English Wikipedia (2001-)  https://en.wikipedia.org</note></mads>