title: The continuous murmur of persistence of the ductus arteriosus-an historical review.
mesh_terms: D004374:Ductus Arteriosus, Patent / Q000266:history* / Q000473:pathology / Q000601:surgery; D006321:Heart / Q000033:anatomy & histology; D006326:Heart Auscultation / Q000266:history*; D006337:Heart Murmurs / Q000266:history*; D006439:Hemodynamics; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans