Kenigsberg David N, Kalahasty Gautham, Grizzard John D, Wood Mark A, Ellenbogen Kenneth A
Division of Cardiology, Virginia Commonwealth University Medical Center, PO Box 980053, Richmond, VA 23298-0053, USA.
Circulation. 2007 May 29;115(21):e538-9. doi: 10.1161/CIRCULATIONAHA.106.685594.