1. Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
2. Division of Medical Informatics, Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas
3. Division of Sleep Medicine, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
4. Faculty of Applied Science and Engineering, University of Toronto, Toronto, Ontario, Canada
5. School of Population and Public, University of British Columbia, Vancouver, British Columbia, Canada
6. Faculty of Dentistry, University of British Columbia, Vancouver, British Columbia, Canada
7. Department of Pharmacology, Shanxi Medical University, Taiyuan, Shanxi, China