Affiliation: | School of Stomatology, Guizhou Medical University, Guiyang 550004, China Dept. of Periodontics and Oral Medicine, Stomatological Hospital of Guizhou Medical University, Guiyang 550004, China Dept. of Stomatology, Mianyang Central Hospital, Mianyang 621000, China State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; |