Shumin Xie1, Wei Liu2, Jihao Ren3. 1. Department of Otolaryngology-Head and Neck Surgery, The Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China. 2. Department of Otolaryngology-Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China. lw-007@163.com. 3. Department of Otolaryngology-Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China.