1. Department of Spine Surgery The First Affiliated Hospital of Sun Yat‐sen University Guangzhou Guangdong China
2. Department of Biomedical Engineering University of Connecticut Storrs, Mansfield Connecticut 06269
3. Guangdong Provincial Key Laboratory of Orthopaedics and Traumatology Guangzhou Guangdong China
4. Department of Mechanical Engineering University of Connecticut Storrs, Mansfield Connecticut 06269
5. Department of Pharmaceutical Sciences University of connecticut Storrs, Mansfield Connecticut 06269
6. Department of Chemical and Biomolecular Engineering University of Connecticut Storrs, Mansfield Connecticut 06269