1. Department of Neurology, University of Washington, Seattle, WA;
2. UW Medicine Sleep Center, University of Washington, Seattle, WA;
3. Washington State Twin Registry, Seattle, WA;
4. Center for Research in the Management of Sleep Disorders, University of Washington, Seattle, WA;
5. Initiative for Research and Education to Advance Community Health, Elson S Floyd College of Medicine, Spokane, WA
6. Fred Hutchinson Cancer Research Center, Seattle, WA;
7. Department of Medicine, University of Washington, Seattle, WA;
8. Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle, WA;
9. Division of Sleep Medicine/Department of Medicine and Center for Sleep and Circadian Neurobiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA;
10. Department of Pediatrics, University of Washington, Seattle, WA