Affiliation: | ? Penn Cardiovascular Institute, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania † Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania ‡ Cardiovascular Medicine, University of Wisconsin, Madison, Wisconsin § Cardiovascular Medicine, Case Western Reserve University, Cleveland, Ohio ∥ Division of Cardiology, University of Washington, Seattle, Washington ¶ Division of Cardiology, Vanderbilt University, Nashville, Tennessee |