2 Defence Medical Rehabilitation Centre, Academic Department of Military Rehabilitation, Stanford Hall, Nottinghamshire.
3 Norfolk & Norwich University Hospitals NHS Foundation Trust, Norwich.
4 Aberdeen Centre for Arthritis and Musculoskeletal Health, University of Aberdeen, Aberdeen.
5 Wrightington, Wigan and Leigh NHS Foundation Trust, Wigan.
6 Royal National Hospital for Rheumatic Diseases, Bath.
7 Institute for Infection, Immunity and Inflammation, University of Glasgow, Glasgow.
8 NIHR Leeds Biomedical Research Centre, Leeds Teaching Hospitals Trust and Leeds Institute of Rheumatic and Musculoskeletal Disease, University of Leeds, Leeds, UK.