[1] Univ Sydney, George Inst, Camperdown, NSW, Australia
[2] Heidelberg Univ, Inst Publ Hlth, Heidelberg, Germany
[3] Univ Southern Denmark, Dept Sport Sci & Clin Biomech, Odense, Denmark
[4] Keele Univ, Inst Primary Care & Hlth Sci, Arthrit Res UK Primary Care Ctr, Keele, Staffs, England
[5] Univ Newcastle, Hunter Med Res Inst, Sch Med & Publ Hlth, Newcastle, NSW, Australia
[6] Hunter New England Local Hlth Dist, Hunter New England Populat Hlth, New Lambton, NSW, Australia