title: Timing of ductal closure in very low birth weight premature infants without respiratory distress.
authors.affiliation: Department of Pediatrics, Oregon Health Sciences University, Portland 97201.
authors.forename: M D
authors.initials: MD
authors.lastname: Reller
authors.forename: M R
authors.initials: MR
authors.lastname: Laird
authors.forename: M J
authors.initials: MJ
authors.lastname: Rice
authors.forename: R W
authors.initials: RW
authors.lastname: McDonald
mesh_terms: D004373:Ductus Arteriosus / Q000000981:diagnostic imaging / Q000502:physiology*; D004452:Echocardiography; D015150:Echocardiography, Doppler; D006801:Humans; D007230:Infant, Low Birth Weight / Q000502:physiology*; D007231:Infant, Newborn; D007234:Infant, Premature / Q000502:physiology*; D011446:Prospective Studies