RT Journal Article SR Electronic T1 Nomenclature of the ductus arteriosus JF British Heart Journal JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 288 OP 288 DO 10.1136/hrt.49.3.288 VO 49 IS 3 A1 R M Marquis A1 M J Godman YR 1983 UL http://heart.bmj.com/content/49/3/288.abstract AB