[1] Zhejiang Univ, Hosp Stomatol, Dept Orthodont, Hangzhou 310003, Zhejiang, Peoples R China
[2] Zhejiang Univ, Coll Med, Affiliated Hosp 2, Dept Stomatol, Hangzhou 310003, Zhejiang, Peoples R China
[3] Chinese Acad Sci, Inst Zool, Beijing, Peoples R China
[4] Fourth Mil Med Univ, Dept Orthodont, Qindu Stomatol Coll, Xian 710032, Shaanxi, Peoples R China
[5] James Cook Univ, Sch Med & Dent, Dept Orthodont, Cairns, Qld, Australia