University of Oxford - Rheumatology and Musculoskeletal Sciences, Erasmus University Rotterdam (EUR) - Department of General Practice, University of Nottingham, Lund University, Lund University, Erasmus University Rotterdam (EUR) - Department of General Practice, Keele University - School of Medicine, Chang Gung University - Chang Gung Memorial Hospital, University of Nottingham - Centre for Academic Primary Care, University of Nottingham - Division of Rheumatology, Orthopaedics and Dermatology, University of Bristol, Southern Medical University, Erasmus University Rotterdam (EUR) - Department of General Practice, University of Nottingham, University of Oxford, University of Oxford, University of Oxford - Rheumatology and Musculoskeletal Sciences and University of Oxford - Rheumatology and Musculoskeletal Sciences