[1] Peking Univ, Sch & Hosp Stomatol, Natl Engn Lab Digital & Mat Technol Stomatol, Dept Oral & Maxillofacial Surg,Beijing Key Lab Dig, Beijing, Peoples R China
[2] Peking Univ, Beijing Key Lab Digital Stomatol, Natl Engn Lab Digital & Mat Technol Stomatol, Dept Oral Pathol,Sch & Hosp Stomatol, Beijing, Peoples R China
[3] Peking Univ, Natl Engn Lab Digital & Mat Technol Stomatol, Beijing Key Lab Digital Stomatol, Dept Oral Radiol,Sch & Hosp Stomatol, Beijing, Peoples R China