[1] Univ Bristol, Bristol Med Sch PHS, MRC Integrat Epidemiol Unit, Bristol, Avon, England
[2] Univ Nottingham, Acad Rheumatol Dept, Sch Med, Div Rheumatol Orthopaed & Dermatol, Nottingham, England
[3] Chang Gung Mem Hosp, Div Rheumatol Allergy & Immunol, Taoyuan, Taiwan
[4] Harvard Med Sch, Massachusetts Gen Hosp, Dept Med, Div Rheumatol Allergy & Immunol, Boston, MA 02115 USA
[5] Cent S Univ, Xiangya Hosp, Hlth Management Ctr, Changsha, Hunan, Peoples R China
[6] Keele Univ, Res Inst Primary Care & Hlth Sci, Arthrit Res UK Primary Care Ctr, Keele, Staffs, England
[7] Cent S Univ, Xiangya Hosp, Dept Orthopaed, Changsha, Hunan, Peoples R China
[8] Hunan Key Lab Joint Degenerat & Injury, Changsha, Hunan, Peoples R China