1. Dayton Department of Veterans Affairs Medical Center, Wright State University, and Kettering Medical Center, Dayton, OH
2. Sleep Disorders Center, Department of Psychiatry and Human Behavior, Jefferson Medical College of Thomas Jefferson University, Philadelphia, PA
3. Sleep Disorders & Research Center, Henry Ford Health System, Department of Psychiatry & Behavioral Neurosciences, School of Medicine, Wayne State University, Detroit, MI
4. Rush University Medical Center, Chicago, IL
5. Northwestern University, Feinberg School of Medicine, Chicago, IL
6. Seton Hall University School of Graduate Medical Education, New Jersey Neuroscience Institute at JFK Medical Center, Edison, NJ
7. Methodist Healthcare Sleep Disorders Center, Memphis, TN
8. LSU Health Science Center — Shreveport, Department of Neurology and Office of the Dean, Shreveport, LA