RT Journal Article SR Electronic T1 ATRIAL SEPTAL DEFECT IN CHILDREN JF British Heart Journal JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 318 OP 326 DO 10.1136/hrt.19.3.318 VO 19 IS 3 A1 Wagner, Joan A1 Graham, Gerald R. YR 1957 UL http://heart.bmj.com/content/19/3/318.abstract AB