1. Department of Otorhinolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
2. Department of Otorhinolaryngology, The First Hospital of Jilin University, Changchun, China
3. Department of Otorhinolaryngology, Peking University Shenzhen Hospital, Shenzhen, China
4. Department of Otorhinolaryngology, Weifang Hospital of Traditional Chinese Medicine, Shandong, China
5. Department of Otorhinolaryngology, The First Affiliated Hospital, Xinjiang Medical University, Urumqi, China