1. From the Division of Cardiovascular Diseases, Brigham and Women’s Hospital, Boston Mass (D.S.B., J.J.P., R.E.K.); Harvard Clinical Research Institute, Boston, Mass (D.S.B., D.E.C., U.K., K.K.L.H., R.E.K.); Riverside Hospital, Columbus, Ohio (B.G.); St Joseph’s Mercy Hospital, Ann Arbor, Mich (D.W.); Cardiovascular Research Foundation, Lenox Hill Hospital, New York, NY (M.B.L.); Florida Hospital, Orlando, Fla (J.G.); and Beth Israel Deaconess Medical Center, Boston, Mass (D.E.C., K.K.L.H.).