1. From the Division of Cardiovascular Medicine, Department of Medicine, Frankel Cardiovascular Center, University of Michigan, Ann Arbor (M.J.H., M.S., H.S.G.); Division of Cardiovascular Medicine, Department of Medicine, Oakwood Healthcare System, Dearborn, MI (A.R.); Division of Cardiovascular Medicine, Department of Medicine, Beaumont Hospital, Royal Oak, MI (G.H.); and Division of Cardiovascular Medicine, Department of Medicine, McLaren Macomb, McLaren Healthcare, Mt. Clemens, MI (M.Z.).