1 Department of Otorhinolaryngology Head and Neck Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China.
2 Department of Otorhinolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi, China.
3 Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, #227 Yanta West Road, Xi'an, 710061, Shaanxi, China. Maxudong_1122@163.com.