1. Department of Orthopedics Guizhou Provincial People's Hospital Guiyang Guizhou 550000 China
2. Translational Tissue Engineering Center Johns Hopkins School of Medicine Baltimore MD 21287 USA
3. Institute for NanoBioTechnology Johns Hopkins University Baltimore MD 21218 USA
4. Department of Biomedical Engineering School of Medicine Johns Hopkins University Baltimore MD 21205 USA
5. Department of Materials Science and Engineering Whiting School of Engineering Johns Hopkins University Baltimore MD 21218 USA