1 Department of Spinal Surgery, Hong-Hui Hospital, Medical College of Xi'an Jiaotong University, No. 76 Nanguo Road, Nanshao Men, Beilin District, Xi'an 710054, China; Department of Orthopaedics, the Second Affiliated Hospital, Chongqing Medical University, No. 76 Linjiang Road, Yuzhong District, Chongqing 400010, China.
2 Department of Orthopaedics, the Second Affiliated Hospital, Chongqing Medical University, No. 76 Linjiang Road, Yuzhong District, Chongqing 400010, China.
3 Department of Pathology, Molecular Medicine and Cancer Research Center, Chongqing Medical University, No. 1 Yixueyuan Road, Yuzhong District, Chongqing 400016, China.
4 Department of Spinal Surgery, Hong-Hui Hospital, Medical College of Xi'an Jiaotong University, No. 76 Nanguo Road, Nanshao Men, Beilin District, Xi'an 710054, China.