1. State Key Laboratory of Oral Diseases, West China Hospital of Stomatology Sichuan University Chengdu Sichuan China
2. Department of Oral Pathology, West China School of Stomatology Sichuan University Chengdu Sichuan China
3. Department of Pediatric Dentistry, West China School of Stomatology Sichuan University Chengdu Sichuan China