1. School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou510006, P. R. China
2. School of Materials Science and Engineering & National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou510006, P. R. China
3. School of Dentistry, University of LeedsSt. James’s University Hospital, Level 7, WTBB, LeedsLS9 7TF, United Kingdom
4. Guangzhou Key Laboratory of Spine Disease Prevention and Treatment, Department of Spine Surgery, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou510150, P. R. China