Affiliation: | 2. Department of Orthopaedics, The Second Affiliated Hospital, Xi''an Jiaotong University, NO.157, Xiwu Road, Xi''an, Shaanxi, 710004, PR China;3. Department of Orthopaedics, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang, Henan Province, 471009, PR China;4. Institute of Ageing and Chronic Disease, University of Liverpool, William Henry Duncan Building, West Derby Road, Liverpool, L7 8TX, UK |