1. Arthritis Research UK Centre for Epidemiology, Centre for Musculoskeletal Research, Institute of Inflammation and Repair, The University of Manchester, Manchester Academic Health Science CentreManchesterUK
2. Norfolk Arthritis Register, School of Medicine, Health Policy and Practice, University of East AngliaNorwichUK
3. Norfolk and Norwich University HospitalNorwichUK
4. Arthritis Research UK Centre for Epidemiology, Centre for Musculoskeletal Research, Institute of Inflammation and Repair, The University of Manchester, Manchester Academic Health Science Centre, and NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust and University of Manchester partnershipManchesterUK