1. Department of Otorhinolaryngology, Head and Neck Surgery, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, Luoyang City, Henan Province, PR China;
2. Department of Otorhinolaryngology, Head and Neck Surgery, Xuzhou Cancer Hospital, Xuzhou City, Jiangsu Province, PR China;
3. Department of Otorhinolaryngology, Head and Neck Surgery, Yongcheng Red Cross Hospital of Henan Province, Yoncheng City, Henan Province, PR China;
4. Department of Otorhinolaryngology, Head and Neck Surgery, The People’s Hospital of Jiawang District in Xuzhou City, Xuzhou City, Jiangsu Province, PR China;
5. Department of Otorhinolaryngology, Head and Neck Surgery, The Affiliated Hospital of Xuzhou Medical College, Xuzhou City, Jiangsu Province, PR China