1. Department of Health Care Policy, Harvard Medical School, Boston, Massachusetts
2. Division of Cardiovascular Medicine, Department of Medicine, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire
3. Department of Health Care Policy, The Dartmouth Institute, Dartmouth Medical School, Hanover, New Hampshire
4. Division of General Internal Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
5. Division of General Medicine and Primary Care, Beth Israel Deaconess Medical Center, Boston, Massachusetts