1. Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, changsha, China
2. Department of Head and Neck Surgery, Harbin Medical University Cancer Hospital, Harbin, China
3. Department of Laboratory, Harbin Medical University Cancer Hospital, Harbin, China
4. Department of Surgery, the 2nd Affiliated Hospital of Harbin Medical University, Harbin, China
5. Department of Head and Neck Surgery, Chinese National Cancer Center & Chinese Academy of Medical Sciences Cancer Hospital, Beijing, China
6. Department of Pathology, Harbin Medical University, Harbin, China
7. Department of Pathology, Harbin Medical University Cancer Hospital, Harbin, China