1. State Key Laboratory of Oral Diseases; Department of Operative Dentistry and Endodontics; West China Hospital of Stomatology; Sichuan University; Chengdu China
2. State Key Laboratory of Oral Diseases; Department of Preventive Dentistry; West China Hospital of Stomatology; Sichuan University; Chengdu China
3. College of Life Sciences; National Engineering Laboratory for Oral Regenerative Medicine Sichuan; University; Chengdu Sichuan 610041 China