1. State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Oral Pathology West China Hospital of Stomatology (Sichuan University) Chengdu China
2. State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Oral and Maxillofacial Surgery West China Hospital of Stomatology (Sichuan University) Chengdu China
3. Department of Stomatology North Sichuan Medical College Nanchong China