1. Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu 610031, P.R. China
2. Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, P.R. China
3. Department of Orthopedics, General Hospital of Western Theater Command, Chengdu 610031, China
4. The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518000, China
5. Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China