[1] Shanghai Ninth Peoples Hosp, Fengcheng Hosp Fengxian Dist, Dept Stomatol, Fengcheng Branch Hosp, Shanghai, Peoples R China
[2] Shanghai Jiao Tong Univ, Natl Ctr Stomatol, Natl Clin Res Ctr Oral Dis, Shanghai Key Lab Stomatol,Coll Stomatol, Shanghai, Peoples R China
[3] Shanghai Jiao Tong Univ, Shanghai Peoples Hosp 9, Dept Oral & Maxillofacial Head & Neck Oncol, Sch Med, Shanghai, Peoples R China
[4] Shanghai Jiao Tong Univ, Shanghai Peoples Hosp 9, Dept Oral Mucosal Dis, Sch Med, Shanghai 200011, Peoples R China