1. From the Lankenau Institute for Medical Research, Wynnewood, Pa (A.P., M.D.E.); Drexel University College of Medicine, Philadelphia, Pa (R.J.); Department of Cardiology, Ochsner Clinic Foundation, New Orleans, La (S.S.); and the Division of Cardiology, Temple University School of Medicine, Philadelphia, Pa (W.A.V.D.).