1. State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
2. Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
3. Jinjiang Out-Patient Section, West China Hospital of Stomatology, Sichuan University, Chengdu, China