1. Division of Sleep Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
2. Corporal Michael Crescenz VA Medical Center, Philadelphia, PA, USA
3. Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women’s Hospital, Boston, MA, USA
4. Division of Sleep Medicine, Harvard Medical School, Boston, MA, USA
5. Department of Management and Organization, Foster School of Business, University of Washington, Seattle, WA, USA
6. Unit for Experimental Psychiatry, Division of Sleep and Chronobiology, Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
7. Centre for Study and Treatment of Circadian Rhythms, Douglas Mental Health University Institute, Department of Psychiatry, McGill University, Montreal, Quebec, Canada
8. Appleton Institute, Central Queensland University, Wayville, SA, Australia
9. Sleep Disorders and Research Center, Henry Ford Hospital, Detroit, MI, USA
10. Fatigue Countermeasures Laboratory, NASA Ames Research Center, Moffett Field, CA, USA
11. STRONG STAR ORU, Department of Psychiatry and Behavioral Sciences, University of Texas Health Science Center, San Antonio, TX, USA
12. Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, PA, USA
13. Center for Circadian and Sleep Medicine, Department of Neurology, Division of Sleep Medicine, Northwestern University, Chicago, IL, USA
14. Centre for Sleep and Human Performance, Calgary, Alberta, Canada
15. Operations Research Department, Naval Postgraduate School, Monterey, CA, USA
16. American Academy of Sleep Medicine, Darien, IL, USA
17. Darien, Illinois, USA
18. Sleep and Performance Research Center, Washington State University, Spokane, WA, USA
19. Elson S. Floyd College of Medicine, Washington State University, Spokane, WA, USA