1. From the Cardiovascular Division, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA (D.S.P., A.K.C., A.D., E.U., C.M.G.); Cardiovascular Division, Columbia University, New York, NY (A.J.K.); ICON Clinical Research Group, San Francisco, CA (P.D.F., D.P.M.); and Minneapolis Heart Institute, Minneapolis, MN (T.D.H.).