Huhta, J C Premature constriction of the ductus arteriosus. [electronic resource] - Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography - 30-4 p. digital Publication Type: Case Reports; Journal Article ISSN: 0894-7317 Standard No.: 10.1016/s0894-7317(14)80296-4 doi Subjects--Topical Terms: Blood Flow VelocityConstriction, PathologicDuctus Arteriosus--pathologyEchocardiography, DopplerFemaleFetal Diseases--diagnosisHumansPregnancy