1. School of Biomedical Sciences and Engineering Guangzhou International Campus South China University of Technology Guangzhou 511442 P. R. China
2. National Engineering Research Center for Tissue Restoration and Reconstruction South China University of Technology Guangzhou 510006 P. R. China
3. Department of Biomedical Engineering The Chinese University of Hong Kong Hong Kong 999077 P. R. China
4. Department of Physics The Chinese University of Hong Kong Hong Kong 999077 P. R. China
5. Department of Orthopaedics and Traumatology Faculty of Medicine The Chinese University of Hong Kong Hong Kong 999077 P. R. China