[1] Sichuan Univ, West China Hosp Stomatol, State Key Lab Oral Dis, Chengdu 610041, Sichuan, Peoples R China
[2] Sichuan Univ, West China Hosp Stomatol, Natl Clin Res Ctr Oral Dis, Chengdu 610041, Sichuan, Peoples R China
[3] Sichuan Univ, West China Hosp Stomatol, Dept Gen Dent, Chengdu, Sichuan, Peoples R China
[4] Southern Med Univ, Stomatol Hosp, Dept Prosthodont, Guangzhou, Guangdong, Peoples R China