1. Department of Oral Implantology, Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat‑sen University, Guangzhou, Guangdong 510055, P.R. China
2. Department of Stomatology, Zhuhai Center for Maternal and Child Healthcare, Zhuhai Women and Children's Hospital, Zhuhai, Guangdong 519000, P.R. China
3. Department of Stomatology, Sun Yat‑sen Memorial Hospital, Sun Yat‑sen University, Guangzhou, Guangdong 510000, P.R. China