1. Division of General Academic Pediatrics, Department of Pediatrics, Massachusetts General Hospital for Children, Boston2Department of Nutrition, Harvard School of Public Health, Boston, Massachusetts
2. Department of Pediatrics, Harvard Vanguard Medical Associates, Boston, Massachusetts
3. Obesity Prevention Program, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, Massachusetts
4. Department of Nutrition, Harvard School of Public Health, Boston, Massachusetts4Obesity Prevention Program, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, Massachusetts
5. Allegheny County Health Department, Pittsburgh, Pennsylvania
6. Division of General Academic Pediatrics, Department of Pediatrics, Massachusetts General Hospital for Children, Boston
7. Section of General Internal Medicine, Veterans Affairs Boston Healthcare System, Boston, Massachusetts