1. University of Washington Medicine Sleep Disorders Center and Department of Neurology, University of Washington, Seattle, Washington
2. Veteran Affairs Greater Los Angeles Health System, North Hills, California and David Geffen School of Medicine at the University of California, Los Angeles, Los Angeles, California
3. Methodist Healthcare Sleep Disorders Center, Memphis, Tennessee
4. Saint Thomas Medical Partners - Sleep Specialists, Nashville, Tennessee
5. Carolinas Healthcare Medical Group Sleep Services, Charlotte, North Carolina
6. University of Pittsburgh, Pittsburgh, Pennsylvania
7. SLUCare Sleep Disorders Center
8. Department of Neurology, Saint Louis University, St. Louis, Missouri
9. Division of Pulmonary/Sleep/Critical Care, Mayo Clinic, Rochester, Minnesota
10. Division of Sleep Medicine, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
11. Wayne State University, Detroit, Michigan
12. College of Nursing, University of Illinois at Chicago, Chicago, Illinois
13. University of Michigan Sleep Disorders Center, University of Michigan, Ann Arbor, Michigan