Department of Otolaryngology-Head and Neck Surgery, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huai'an, 223002, Jiangsu Province, China; Department of Otolaryngology-Head and Neck Surgery, ENT Hospital of Huaian, Huai'an, 223002, Jiangsu Province, China. Electronic address: