RT Journal Article SR Electronic T1 Transcatheter closure of the aortopulmonary window in a symptomatic infant using the Amplatzer ductal occluder JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 1519 OP 1519 DO 10.1136/hrt.2006.109298 VO 93 IS 12 A1 Viswanathan, Sangeetha A1 Vaidyanathan, Balu A1 Kumar, R Krishna YR 2007 UL http://heart.bmj.com/content/93/12/1519.abstract AB