Warning: XSLTProcessor::transformToXml() [xsltprocessor.transformtoxml]: I/O warning : failed to load external entity "file:////srv/scielo/www/bases/xml/rcsp/v49n4/1561-3127-rcsp-49-04-e3356.xml" in /srv-new/scielo/www/htdocs/class.XSLTransformerPHP5.php on line 36 Consideraciones epidemiológicas y clínicas de la COVID-19 en pacientes con diabetes mellitus