[1] Univ South Australia, IIMPACT Hlth, Allied Hlth & Human Performance, Adelaide, SA 5000, Australia
[2] Univ Southampton, Sch Hlth Sci, Bldg 67,Univ Rd, Southampton SO17 1BJ, Hants, England
[3] Univ Southampton, Ctr Sport, Exercise & Osteoarthritis Res Versus Arthrit, Southampton SO17 1BJ, Hants, England
[4] Univ Leeds, Leeds Inst Rheumat & Musculoskeletal Med, Leeds LS2 9JT, W Yorkshire, England
[5] Univ N Carolina, Gillings Sch Global Publ Hlth, Dept Epidemiol, Thurston Arthrit Res Ctr, 3330 Thurston Bldg,CB 7280, Chapel Hill, NC 27599 USA
[6] Leeds Community Healthcare NHS Trust, Podiatry Serv, Leeds LS6 1PF, W Yorkshire, England
[7] Beth Israel Deaconess Med Ctr, Hinda & Arthur Marcus Inst Aging Res, Hebrew SeniorLife, Boston, MA USA
[8] Harvard Med Sch, Boston, MA 02108 USA
[9] La Trobe Univ, Sch Allied Hlth Human Serv & Sport, Melbourne, Vic 3086, Australia
[10] Keele Univ, Sch Med, Primary Care Ctr Versus Arthrit, Keele ST5 5BG, Staffs, England
[11] Univ Melbourne, Sch Hlth Sci, Ctr Hlth Exercise & Sports Med, Fac Med Dent & Hlth Sci, Melbourne, Vic 3010, Australia
[12] Haywood Acad Rheumatol Ctr, Haywood Hosp, Midlands Partnership NHS Fdn Trust, Burslem, England