[Diagnosis of patent ductus arteriosus by 2-d echocardiography].
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Chen
D002648:Child; D002675:Child, Preschool; D004374:Ductus Arteriosus, Patent / Q000175:diagnosis* / Q000473:pathology; D004452:Echocardiography; D006801:Humans; D007223:Infant; D007231:Infant, Newborn