1. School of Materials Science and Engineering and Key Laboratory of Biomedical Materials of Ministry of Education, South China University of Technology, Guangzhou 510641, P. R. China
2. National Engineering Research Center for Tissue Restoration and Reconstruction, Guangzhou 510006, P. R. China
3. National Engineering Research Center for Healthcare Devices, Guangdong Key Lab of Medical Electronic Instruments and Polymer Material Products, Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Guangzhou 510536, P. R. China
4. Department of Orthopedics, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, P. R. China