1. Department of Health Policy and Management, Harvard School of Public Health, Boston, Massachusetts3Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women’s Hospital, Boston, Massachusetts5The VA Healthcare System, Boston, Massachus
2. Department of Biostatistics, Harvard School of Public Health, Boston, Massachusetts4Division of General Internal Medicine, Department of Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
3. Department of Health Policy and Management, Harvard School of Public Health, Boston, Massachusetts4Division of General Internal Medicine, Department of Medicine, Brigham and Women’s Hospital, Boston, Massachusetts5The VA Healthcare System, Boston, Massach