1. Veterans Affairs Portland Health Care System, Division of Mental Health and Clinical Neurosciences, Portland, Oregon
2. Department of Psychiatry, Oregon Health & Science University, Portland, Oregon
3. Oregon Institute of Occupational Health Sciences, Portland, Oregon
4. Division of Sleep and Circadian Disorders, Department of Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
5. Division of Sleep Medicine, Harvard Medical School, Boston, Massachusetts
6. Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts
7. Department of Medicine, Johns Hopkins University, Baltimore, Maryland
8. School of Public Health, Oregon Health & Science University, Portland, Oregon