1. Department of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan, China
2. National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
3. Department of Life Science, McMaster University, Hamilton, Ontario, Canada
4. Department of Spine Surgery and Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan, China