1. Department of Otolaryngology Head and Neck Surgery and Clinical Center for OSAHS, Beijing Tongren Hospital, Capital Medical University, Beijing, China
2. Key Laboratory of Otolaryngology Head and Neck Surgery (Ministry of Education of China), Capital Medical University, Beijing, China
3. Division of Pulmonary, Critical Care and Sleep Medicine, University of California, San Diego, San Diego, California
4. Department of Otolaryngology Head and Neck Surgery, Beijing Tsinghua Changgung Hospital, Beijing, China
5. Division of Sleep Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts