From the Department of Cardiovascular Medicine, The Cleveland Clinic Foundation, Cleveland, Ohio (D.L.B., E.J.T.); and the Harvard Clinical Research Institute, Division of Cardiology, Beth Israel Deaconess Medical Center, Division of Cardiology, Brigham and Women’s Hospital, and Harvard Medical School, Boston, Mass (D.E.C., R.E.K.). (At 2005-08-09)