1. Department of Nutrition; Harvard School of Public Health; Boston Massachusetts USA
2. Department of Epidemiology; Harvard School of Public Health; Boston Massachusetts USA
3. Obesity Prevention Program, Department of Population Medicine; Harvard Medical School and Harvard Pilgrim Health Care Institute; Boston Massachusetts USA
4. Division of Sleep and Circadian Disorders, Department of Medicine; Brigham and Women's Hospital; Boston Massachusetts USA
5. Division of Sleep and Circadian Disorders, Department of Neurology; Brigham and Women's Hospital; Boston Massachusetts USA
6. Division of General Academic Pediatrics, Department of Pediatrics; Massachusetts General Hospital for Children; Boston Massachusetts USA
7. Harvard Medical School; Boston Massachusetts USA