1. Center for Sleep Health and Research, Department of Respiratory Medicine, Royal North Shore Hospital, Sydney, Australia
2. NHMRC Centre for Integrated Research and Understanding of Sleep (CIRUS), The University of Sydney, Sydney, Australia
3. Center for Sleep and Circadian Neurobiology, University of Pennsylvania School of Medicine, Philadelphia, PA
4. Division of Sleep Medicine, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
5. Department of Respiratory Medicine, Gosford Hospital, Gosford, Australia
6. School of Medicine and Public Health, University of Newcastle, Newcastle, Australia
7. Faculty of Medicine, University of Iceland, Reykjavik, Iceland
8. Department of Respiratory Medicine and Sleep, Landspitali University Hospital Fossvogi, Reykjavik, Iceland
9. Department of Otolaryngology, Landspitali, The National University Hospital of Iceland, Reykjavik, Iceland