1. Department of Oral and Maxillofacial & Head and Neck Oncology, Beijing Stomatological Hospital, Capital Medical University, Tian Tan Xi Li No.4, Beijing, 100050, China
2. Department of Oral and Maxillofacial Surgery, Shanxi Provincial People's Hospital, Shuang Ta Temple Street No. 29, Taiyuan, Shanxi, 030000, China