Department of Internal Medicine, Emory University School of Medicine, Atlanta, Ga. Emory University School of Medicine, Atlanta, Ga. Emory Clinical Cardiovascular Research Institute, Division of Cardiology, Emory University School of Medicine, Atlanta, Ga. Division of Cardiology, Department of Medicine, National Jewish Health, Denver, Colo. Stepfamily Foundation Cardiovascular Wellness and Rehabilitation Center, Division of Cardiovascular Medicine, University of California San Diego. Emory Clinical Cardiovascular Research Institute, Division of Cardiology, Emory University School of Medicine, Atlanta, Ga. Electronic address: lsperli@emory.edu.