1. Orthopedic Research Institute, Department of Orthopedics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China
2. Laboratory of Stem Cell and Tissue Engineering, Orthopedic Research Institute, Med-X Center for Materials, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China
3. State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, PR China
4. Boston University Henry M. Goldman School of Dental Medicine, Boston, Massachusetts 02215-1300, United States
5. West China School of Public Health, Sichuan University, Chengdu, Sichuan 610041, PR China
6. Core Facilities of West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China
7. College of Electronics and Information Engineering, Sichuan University, Chengdu, Sichuan 610041, PR China