Weber H S, Cyran S E, Gleason M M, White M G, Baylen B G
Section of Pediatrics (Cardiology), Pennsylvania State University Childrens Hospital, Milton S. Hershey Medical Center, Hershey 17033.
Am J Cardiol. 1994 Feb 1;73(4):310-2. doi: 10.1016/0002-9149(94)90240-2.