1. Oregon Institute of Occupational Health Sciences, Oregon Health & Science University, Portland, OR
2. Department of Behavioral Neuroscience, Oregon Health & Science University, Portland, OR
3. Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Boston, MA
4. Division of Sleep Medicine, Harvard Medical School, Boston, MA
5. Department of Neurology, Changzheng Hospital, Second Military Medical University, Shanghai, China
6. Department of Public Health and Preventive Medicine, Oregon Health & Science University, Portland, OR