Warning: XSLTProcessor::transformToXml() [xsltprocessor.transformtoxml]: I/O warning : failed to load external entity "file:////srv/scielo/www/bases/xml/amc/v27/1025-0255-amc-27-e9681.xml" in /srv-new/scielo/www/htdocs/class.XSLTransformerPHP5.php on line 36 Factores predictivos de anemia en gestantes de un área de salud