1. Department of Orthodontics, Stomatological Hospital of Chongqing Medical University, Chongqing, China
2. Department of Orthodontics, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
3. Department of Orthodontics, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China