1. From the Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL (S.J.S.); Division of Cardiology, New York Methodist Hospital, Brooklyn, NY (J.F.H.); Division of Cardiology, Department of Medicine, University of Wisconsin, Madison, WI (N.K.S.); VA Medical Center and University of Minnesota, Minneapolis, MN (I.S.A.); New England Research Institute, Watertown, MA (H.-Y.K., B.H. R.L.); National Heart, Lung, and Blood Institute, Bethesda, MD (R.B...