1Division of Cardiology, St Luke's-Roosevelt Hospital Center, and the Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York
2Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, North Carolina
3Division of General Medicine, Columbia College of Physicians and Surgeons, and Cardiovascular Institute, Mount Sinai School of Medicine, New York, New York
4Department of Psychology, University of Miami, Coral Gables, Florida
5Department of Society, Human Development, and Health, Harvard School of Public Health, Boston, Massachusetts