1. From the Division of Cardiology, Department of Medicine, the UCSF Center for the Prevention of Sudden Death (J.E.O., C.M., B.K.L.) and the Department of Epidemiology and Biostatistics (M.J.P., E.V., T.F.H., F.L., J.A.S., S.H.), University of California, San Francisco, San Francisco; the Department of Electrocardiology, Medical University of Lodz, Lodz, Poland (J.W.); McLeod Regional Medical Center, Florence, SC (R.M.); Ochsner Medical Center and Ochsner Clinical School, University of Queensland School of...