1. From the Department of Medicine, Division of Cardiology (P.H.B., A.D.W.), The Toronto Hospital, and the Departments of Medicine and Physiology (P.H.B., A.D.W., R.S.), University of Toronto, Ontario, Canada, and the Section of Myocardial Biology, Cardiovascular Institute, Departments of Medicine (P.L., G.I.F.), Physiology & Biophysics and Biochemistry and Molecular Biology (G.I.F.), Mount Sinai School of Medicine, New York, NY. A.D.W.’s current address is ICAgen Inc, Durham, NC. Q.H.’s current...