1. School of Mechatronic Engineering and Automation Shanghai University Shanghai P. R. China
2. Department of Orthopaedics Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases Shanghai Institute of Traumatology and Orthopaedics Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai P. R. China
3. Department of Spine Surgery Renji Hospital Shanghai Jiao Tong University School of Medicine Shanghai P. R. China
4. Department of Physics and Harvard John A. Paulson School of Engineering and Applied Sciences Harvard University Cambridge Massachusetts USA
5. Pharmaceutical Sciences Laboratory Åbo Akademi University and Turku Bioscience Centre University of Turku and Åbo Akademi University Turku Finland