1. Department of Otorhinolaryngology, Qilu Hospital, Shandong University, Key Laboratory of Otolaryngology, NHFPC (Shandong University), Jinan, China.
2. Department of Otorhinolaryngology, Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.
3. Department of Otorhinolaryngology, Affiliated Weihai Second Municipal Hospital of Qingdao University, Weihai, China.