RT Journal Article SR Electronic T1 Anomalous left pulmonary artery without pulmonary artery sling JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 521 OP 522 DO 10.1136/hrt.79.5.521 VO 79 IS 5 A1 A Robida A1 B Venkatraman YR 1998 UL http://heart.bmj.com/content/79/5/521.abstract AB