Richard A Chazal1, Steven R Houser2. 1. From American College of Cardiology, Washington, DC (R.A.C.); and American Heart Association, Dallas, TX (S.R.H.). richard.chazal@leememorial.org. 2. From American College of Cardiology, Washington, DC (R.A.C.); and American Heart Association, Dallas, TX (S.R.H.).