1. State Key Laboratory of Oral Diseases, West China Hospital of Stomatology Sichuan University Chengdu China
2. National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology Sichuan University Chengdu China
3. Department of Cariology and Endodontics, West China Hospital of Stomatology Sichuan University Chengdu China
4. West China School of Basic Medical Sciences & Forensic Medicine Sichuan University Chengdu China