1. Department of Orthopaedics, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan
2. Department of Orthopaedics, School of Medicine, College of Medicine, Taipei Medical University, Taipei City 11031, Taiwan
3. Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei City 11031, Taiwan
4. Division of Neurosurgery, Department of Surgery, National Taiwan University Hospital, Taipei City 100225, Taiwan
5. Spine Tumor Center, National Taiwan University Hospital, Taipei City 100225, Taiwan
6. Department of Orthopedic Surgery, Wan Fang Hospital, Taipei Medical University, Taipei City 11696, Taiwan
7. School of Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei City 11031, Taiwan