1. State Key Laboratory of Oral Diseases West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, People's Republic of China
2. Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, People's Republic of China
3. Department of Oral Pathology, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, People's Republic of China