1. From the Department of Internal Medicine (S.S.P., R.T., J.T.W., E.T.H.Y.) and the Institute of Molecular Medicine for the Prevention of Human Diseases (E.T.H.Y.), University of Texas Health Sciences Center, Houston, Tex; and the Texas Heart Institute (J.T.W., E.T.H.Y.), St Luke’s Episcopal Hospital, Houston, Tex.