1. From the Heart Institute (J.M.-E., P.W., J.S.D., R.A.K.), Good Samaritan Hospital, Los Angeles, Calif; the Institute for Genetic Medicine (J.M.-E., L.K.), the Department of Medicine (P.W., R.A.K.), Norris Cancer Center (T.I.L., P.W.L.), Keck School of Medicine, University of Southern California, Los Angeles; the Department of Internal Medicine III (J.M.-E.), University of Cologne, Germany; and the Division of Cardiology (K.L.P.), Department of Medicine, University of California, San Diego.