1. Department of Stomatology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, P.R. China
2. Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510140, P.R. China
3. Department of Stomatology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510635, P.R. China
4. Department of Periodontology, Hefei Stomatological Hospital, Hefei, Anhui 230001, P.R. China
5. Department of Oral and Maxillofacial Surgery, Sun Yat‑sen Memorial Hospital, Sun Yat‑sen University, Guangzhou, Guangdong 510120, P.R. China