1. Division of Sleep Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
2. Carolinas Healthcare Medical Group Sleep Services, Charlotte, North Carolina
3. Saint Thomas Medical Partners - Sleep Specialists, Nashville, Tennessee
4. Washington University Sleep Center, St. Louis, Missouri
5. Division of Pulmonary and Critical Care Medicine, Center for Sleep Medicine, Mayo Clinic, Rochester, Minnesota
6. Johns Hopkins University, School of Medicine, Baltimore, Maryland
7. University of Pittsburgh, Pittsburgh, Pennsylvania
8. Veteran Affairs Greater Los Angeles Healthcare System, North Hills, California
9. David Geffen School of Medicine at the University of California, Los Angeles, California
10. Department of Pediatrics, Case Western Reserve University, University Hospitals - Cleveland Medical Center, Cleveland, Ohio
11. Wayne State University, Detroit, Michigan
12. University of Michigan Sleep Disorders Center, University of Michigan, Ann Arbor, Michigan