1. Division of Preventive Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
2. Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts
3. Department of Nutrition, Harvard School of Public Health, Boston, Massachusetts
4. Department of Ambulatory Care and Prevention, Harvard Medical School, Boston, Massachusetts
5. Department of Epidemiology, University of California, Los Angeles, School of Public Health, Los Angeles, California
6. Department of Medicine, University of California, Los Angeles, David Geffen School of Medicine, Los Angeles, California