1. Division of General Pediatrics, Boston Children’s Hospital, Boston, Massachusetts;
2. Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts;
3. Medicine,
4. Departments of Pediatrics,
5. Rand Corporation, Santa Monica, California; and
6. Health Care Policy, and
7. Harvard Medical School, Harvard University, Boston, Massachusetts;
8. Office of the Dean, Kaiser Permanente Bernard J. Tyson School of Medicine, Pasadena, California