1. Department of Head and Neck Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China.
2. NHC Key Laboratory of Carcinogenesis, and Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China.
3. Department of Oral and Maxillofacial Surgery, The Second Xiangya Hospital, Central South University, Changsha, China.