1. National Spinal Cord Injury International Cooperation Base, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Department of Orthopedics, Tianjin Medical University General Hospital, Anshan Road 154, Heping District, Tianjin 300052, China
2. Department of Orthopedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopedics, Advanced Medical Research Institute, Shandong University, Jinan, Shandong 250033, China
3. Department of Rehabilitation Medicine, Tianjin Medical University General Hospital, Anshan Road 154, Heping District, Tianjin 300052, China
4. Department of Orthopaedics, The Second Hospital of Shandong University, Jinan, Shandong 250033, China
5. International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University, Zhoukou, Henan 466001, China
6. Department of Orthopaedics, Qilu Hospital of Shandong University, The Second Hospital of Shandong University, Shandong University Centre for Orthopaedics, Advanced Medical Research Institute, Shandong University, Jinan, Shandong 250033, China