Frank Lowell H, Kumar T K Susheel, Jonas Richard A, Donofrio Mary T
Division of Cardiology, Children's National Medical Center, 111 Michigan Avenue NW, Washington, DC 20010, USA.
Pediatr Cardiol. 2012 Jan;33(1):150-4. doi: 10.1007/s00246-011-0071-0. Epub 2011 Aug 18.