1. West China Hospital of Stomatology, Sichuan University, State Key Laboratory of Oral Diseases; Department of Pediatric Dentistry; No. 14, 3rd Section, Renmin South Road Chengdu Sichuan China 610041
2. West China Hospital of Stomatology, Sichuan University, State Key Laboratory of Oral Diseases; Department of Head and Neck Oncology; No. 14, Section Three, Ren Min Nan Road Chengdu Sichuan China 610041
3. West China Hospital of Stomatology, Sichuan University, State Key Laboratory of Oral Diseases; Department of Operative Dentistry and Endodontics; No. 14, 3rd Section, Ren Min South Road Chengdu Sichuan China 610041
4. The University of Hong Kong; Dental Public Health, Faculty of Dentistry; 3B20, 3/F, Prince Philip Dental Hospital 34 Hospital Road Hong Kong China
5. West China Hospital of Stomatology, Sichuan University, State Key Laboratory of Oral Diseases; Department of Oral and Maxillofacial Surgery; No. 14, Section Three, Ren Min Nan Road Chengdu Sichuan China 610041