1 Department of Otorhinolaryngology Head and Neck Surgery of Tianjin First Center Hospital, Tianjin 300192, China.
2 Department of Otorhinolaryngology Head and Neck Surgery of Tianjin First Center Hospital, Tianjin 300192, China; Department of Otorhinolaryngology of Guangzhou Women and Children's Medical Center, Guangzhou 510623, China.