1. From the Cardiovascular Research Institute (D.T., M.R., D.N., E.M., A.M., E.Z., K.U., B.N.-G., J.K., P.A., A.L.), New York Medical College, Valhalla, NY; Cardiology Division (A.R.), Massachusetts General Hospital, Harvard Medical School, Boston, Mass; Molecular Cardiology (K.W.), Boston University, Boston, Mass; SDSU Heart Institute and Department of Biology (I.S., M.A.S.), San Diego State University, San Diego, Calif.