[1] Sun Yat sen Univ, Sun Yat sen Mem Hosp, Dept Oral & Maxillofacial Surg, Guangzhou, Peoples R China
[2] Guangzhou Med Univ, Guangzhou Inst Oral Dis, Key Lab Oral Med, Stomatol Hosp, Guangzhou, Guangdong, Peoples R China
[3] Sun Yat sen Univ, Sun Yat sen Mem Hosp, Dept Oral & Maxillofacial Surg, 107 Yanjiang Rd, Guangzhou 510120, Peoples R China