1 Guizhou Provincial People's Hospital, Department of Otolaryngology, Guizhou, China. Electronic address: 858074855@qq.com.
2 Guizhou Provincial People's Hospital, Department of Paediatrics, Guizhou, China.
3 Guizhou Provincial People's Hospital, Department of Otolaryngology, Guizhou, China.
4 Guizhou Provincial People's Hospital, Department of Otolaryngology, Guizhou, China; Staff Hospital of Guizhou Province, Department of Pathology, Guizhou, China.
5 Guizhou Provincial People's Hospital, Department of Otolaryngology, Guizhou, China. Electronic address: yehuiping888@aliyun.com.