Gutgesell H P, Barton D M, Elgin K M
Division of Pediatric Cardiology, Department of Pediatrics, University of Virginia Health System, Charlottesville, Virginia 22908-0386, USA.
Am J Cardiol. 2001 Aug 15;88(4):457-9. doi: 10.1016/s0002-9149(01)01704-0.