1. State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu, China
2. Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
3. Department of Oral and Maxillofacial Surgery, Faculty of Dental Medicine, Hospital of the University of Kinshasa, Kinshasa, Democratic Republic of the Congo