title: [Persistent ductus arteriosus; classification and study of 24 cases].
mesh_terms: D000015:Abnormalities, Multiple / Q000473:pathology; D002675:Child, Preschool; D004374:Ductus Arteriosus, Patent / Q000145:classification* / Q000196:embryology / Q000473:pathology; D006345:Heart Septal Defects, Ventricular / Q000473:pathology; D006351:Heart Valves / Q000002:abnormalities / Q000473:pathology; D006801:Humans; D007223:Infant; D007231:Infant, Newborn
vernacular_title: Persistencia del tronco arterioso; clasificación y estudio de 24 casos.