1. Kunming Medical University, No. 1168 West Chunrong Road, Kunming, Yunnan 650504, China
2. Department of OrthopaedicsThe First People’s Hospital of Yunnan Province, , No. 504 Qingnian Rd, Kunming, Yunnan 650011, China
3. Department of Orthopaedics, The First Affiliated Hospital of Kunming Medical University, No.295 Xichang Rd, Kunming, Yunnan 650032, China
4. Department of Spinal Surgery, The First Affiliated of Dali University, No. 32 Jiashibo Rd, Dali, Yunnan, 671000, China