affiliation not provided to SSRN, Griffith University, University of Auckland, Griffith University, The University of Sydney, University of Melbourne, Keele University - Primary Care Centre Versus Arthritis, University of Warwick, The University of Sydney, affiliation not provided to SSRN, The University of Sydney, Epworth Healthcare, University of Melbourne, affiliation not provided to SSRN, University of Melbourne, University of Melbourne, The University of Sydney - Rheumatology Department, Griffith University and Griffith University