Warning: XSLTProcessor::transformToXml() [xsltprocessor.transformtoxml]: I/O warning : failed to load external entity "file:////srv/scielo/www/bases/xml/rhcm/v20n4/1729-519X-rhcm-20-04-e3293.xml" in /srv-new/scielo/www/htdocs/class.XSLTransformerPHP5.php on line 36 Evolución del tratamiento de la Úlcera péptica duodenal