Affiliation: | 1. Department of Otolaryngology, Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu, China;2. Department of Otolaryngology, People's Hospital of the Tibet Autonomous Region, Lasha, China;3. Department of Otolaryngology, Head and Neck Surgery, Affiliated Eye, Ear, Nose and Throat Hospital, Fudan University, Shanghai, China |