1. Division of Preventive Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
2. Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts
3. Division of Nutrition and Physical Activity, Centers for Disease Control and Prevention, Atlanta, Georgia
4. Channing Laboratory, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
5. Department of Ambulatory Care and Prevention, Harvard Medical School, Boston, Massachusetts