title: Patent ductus arteriosus: surgical ligation in premature infants with respiratory distress syndrome.
mesh_terms: D004374:Ductus Arteriosus, Patent / Q000150:complications / Q000601:surgery*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007235:Infant, Premature, Diseases / Q000601:surgery; D008026:Ligation; D012127:Respiratory Distress Syndrome, Newborn / Q000150:complications / Q000601:surgery*