1. Institute of Smart Biomedical Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, P.R. China.
2. Zhejiang-Mauritius Joint Research Center for Biomaterials and Tissue Engineering, Zhejiang Sci-Tech University, Hangzhou, P.R. China.
3. Department of Spinal Surgery, The First Affiliated Hospital of Ningbo University, Ningbo, P.R. China.
4. Department of Orthopedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine and Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang, Hangzhou, P.R. China.