1. Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Chapel Allerton Hospital, and NIHR Leeds Musculoskeletal Biomedical Research Unit; Leeds Teaching Hospitals NHS Trust; Leeds; UK
2. Karolinska University Hospital and Karolinska Institute; Solna; Stockholm; Sweden
3. Barts and The London School of Medicine and Dentistry; Queen Mary University of London; London; UK
4. Kennedy Institute of Rheumatology, London, UK, and University of Oxford; Oxford; UK
5. King's College London School of Medicine; London; UK
6. University of Exeter Medical School; Exeter; UK