1. Department of Orthodontics, Fujian Medical University Union Hospital, Fuzhou, Fujian Province, China
2. Shenzhen Institute of Advanced Technology (SIAT), Chinese Academy of Sciences (CAS), Shenzhen, Guangdong Province, China
3. Department of Mechanical and Energy Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN, USA
4. Department of Orthodontics and Oral Facial Genetics, Indiana University, Indianapolis, IN, USA