1. From the Virginia Chapter, American College of Cardiology, Charlottesville, Va (J.E.B., C.M.V.); Virginia Health Quality Center, Glen Allen (E.R., F.S., S.C., J.L., S.G.); Department of Biostatistics, Virginia Commonwealth University, Richmond (L.T.); Division of Cardiology, Northwestern University Medical School, Chicago, Ill (R.O.B.); and Sentara Healthcare, Norfolk, Va (J.B.).