1. Division of Sleep Medicine, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine , Stanford, CA , USA
2. Department of Orthodontics, Arthur A. Dugoni School of Dentistry at the University of the Pacific , San Francisco, CA , USA
3. Department of Child Health, and Child Health Research Institute, University of Missouri School of Medicine , Columbia, MO , USA
4. Division of Sleep Surgery, Department of Otolaryngology-Head & Neck Surgery, School of Medicine, Stanford University , Stanford, CA , USA
5. Division of Orthodontics, Department of Orofacial Science, School of Dentistry, the University of California San Francisco , San Francisco, CA , USA