1. From the Department of Pharmacology, University of Michigan Medical School, Ann Arbor (Y.B., C.R.F., L.F.L.-S., C.C., L.L.I.); Center for Arrhythmia Research and Department of Medicine/Cardiovascular Medicine, University of Michigan, Ann Arbor (B.C.W., R.R.-M., J.A., H.H.V., J.J.); Leon H. Charney Division of Cardiology, New York University School of Medicine, NY (X.L., M.D.); Department of Pharmacology and Physiology, University of Rochester Medical Center, NY (D.S.A.); and Division of...