[Ligation of the ductus arteriosus in very low birth weight infants].
D004374:Ductus Arteriosus, Patent / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D007363:Intensive Care Units, Neonatal; D008026:Ligation; D011859:Radiography