1. Department of Ambulatory Care and Prevention, Harvard Pilgrim Health Care and Harvard Medical School, Boston, Massachusetts
2. Department of Preventive Care and Center for Health Studies, Group Health Cooperative, Seattle, Washington
3. Health Services
4. Pediatrics
5. Epidemiology
6. Robert Wood Johnson Clinical Scholars Program
7. Department of Biostatistics
8. Child Health Institute, University of Washington, Seattle, Washington
9. Children's Hospital and Regional Medical Center, Seattle, Washington