1. Department of Pharmaceutical Health Services Research, University of Maryland School of Pharmacy, Baltimore, MD 21201, USA
2. School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
3. Sleep Disorders Center, Walter Reed National Military Medical Center, Sleep Disorders Center, Silver Spring, MD 20814, USA
4. Department of Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA
5. Department of Family Medicine, Fort Belvoir Community Hospital, Fort Belvoir, VA 22060, USA
6. Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA
7. Sleep Medicine Clinic, Fort Belvoir Community Hospital, Fort Belvoir, VA 22060, USA
8. Department of Medicine, Fort Belvoir Community Hospital, Fort Belvoir, VA 22060, USA
9. Sleep Research Center, Henry Ford Health System, Detroit, Michigan 48377, USA
10. Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD 21201, USA
11. Department of Psychiatry and Behavioral Sciences, School of Medicine, Stanford University, Palo Alto, CA 94305, USA
12. Department of Psychiatry, University of Arizona College of Medicine, Tucson, AZ 85724, USA
13. Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD 21201, USA