1 Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha 410008, China; Health Management Center, Xiangya Hospital, Central South University, Changsha 410008, China; Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha 410008, China; Hunan Key Laboratory of Joint Degeneration and Injury, Changsha 410008, China.
2 Division of Rheumatology, Allergy, and Immunology, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston 02114, USA; The Mongan Institute, Massachusetts General Hospital, Harvard Medical School, Boston 02114, USA.
3 Sydney Musculoskeletal Health, Kolling Institute, University of Sydney and Rheumatology Department, Royal North Shore Hospital, Sydney 2065, Australia.
4 Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha 410008, China; Hunan Key Laboratory of Joint Degeneration and Injury, Changsha 410008, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China. Electronic address: zengchao@csu.edu.cn.
5 Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha 410008, China; Hunan Key Laboratory of Joint Degeneration and Injury, Changsha 410008, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China. Electronic address: lei_guanghua@csu.edu.cn.