1. Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otolaryngology Head and Neck Surgery (Ministry of Education of China), Beijing, China
2. Pulmonary and Sleep Division, University of California at San Diego, California
3. Department of Otolaryngology Head and Neck Surgery, Beijing Tsinghua Changgung Hospital, Tsinghua University, Beijing, China
4. Division of Sleep and Circadian Disorders, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
5. Department of Allergy Immunology and Respiratory Medicine and Central Clinical School, The Alfred and Monash University, Melbourne, Australia