1. Department of Otorhinolaryngology Head and Neck Surgery, Department of Allergy, Beijing Tongren Hospital, Capital Medical University, Beijing 100073, China
2. Department of Otolaryngology Head and Neck Surgery, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
3. Beijing Institute of Otolaryngology, Beijing Laboratory of Allergic Diseases (Beijing Municipal Education Commission), Beijing Key Laboratory of Nasal diseases, Key Laboratory of Otolaryngology-Head and Neck Surgery (Ministry of Education of China) of Capital Medical University, Beijing 100005, China
4. Upper Airways Research Laboratory, Department of Oto-Rhino-Laryngology, Ghent University Hospital, 9000 Ghent, Belgium
5. Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing 10073, China
6. Departments of Oncology, Community Health Sciences, and Surgery, Cumming School of Medicine, and The Center for Health Informatics, University of Calgary, Calgary, Alberta, Canada
7. MIID Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
8. Department of Epidemiology research, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
9. Department of Otorhinolaryngology-Head and Neck Surgery, University Hospital of Münster, Münster, Germany
10. Department of Otorhinolaryngology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China