1. Department of Biobehavioral Health, Pennsylvania State University, University Park, Pennsylvania
2. Division of Sleep Medicine, Harvard Medical School, Boston, Massachusetts
3. Department of Social and Behavioral Sciences, Harvard Chan School of Public Health, Boston, Massachusetts
4. Departments of Medicine and Neurology, Brigham and Women's Hospital, Boston, Massachusetts
5. Harvard Center for Population and Development Studies, Boston, Massachusetts
6. Department of Family Medicine, Oregon Health & Science University, Portland, Oregon
7. School of Public Health, Oregon Health & Science University, Portland, Oregon
8. Division of Epidemiology, The Ohio State University, Columbus, Ohio
9. Department of Human Development and Family Studies, Pennsylvania State University, University Park, Pennsylvania