1. From the Minneapolis Heart Institute Foundation, Abbott Northwestern Hospital, Minneapolis, Minn (H.H., W.R.P., M.M., R.S.S.); CV Path, International Registry of Pathology, Gaithersburg, Md (E.L., R.V.); Division of Cardiovascular Medicine, Toho University, Ohashi Medical Center, Tokyo, Japan (M.N.); and Evanston Northwestern Hospital, Evanston, Ill (T.F.).