1. Division of General Medicine and Primary Care, Brigham and Women’s Hospital, Boston, Massachusetts2Harvard Medical School, Boston, Massachusetts
2. Schaeffer Center for Health Policy and Economics, University of Southern California, Los Angeles
3. Division of General Medicine and Primary Care, Brigham and Women’s Hospital, Boston, Massachusetts2Harvard Medical School, Boston, Massachusetts4RAND, Boston, Massachusetts
4. Harvard Medical School, Boston, Massachusetts5Division of General Medicine, Massachusetts General Hospital, Boston
5. RAND, Santa Monica, California
6. Anderson School of Management, University of California, Los Angeles