1. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
2. Division of Cardiology, Columbia University Irving Medical Center/New York-Presbyterian Hospital and the Cardiovascular Research Foundation, New York
3. Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia
4. Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
5. Department of Medicine, University of Mississippi, Jackson