1. Leeds Institute of Rheumatic and Musculoskeletal Medicine and NIHR Leeds Musculoskeletal Biomedical Research Unit, University of Leeds; Leeds UK
2. University of Utah; Salt Lake City
3. St Vincent's University Hospital; Dublin Ireland
4. Bradford Teaching Hospitals NHS Foundation Trust; Bradford UK
5. Barts Health NHS Trust; London UK
6. Western Infirmary; Glasgow UK
7. Nottingham Independent Treatment Centre; Nottingham UK
8. Prosser White Dermatology Centre, Wrightington, and Wigan and Leigh NHS Foundation Trust; Wigan UK
9. Salford Royal NHS Foundation Trust, The University of Manchester, Manchester Academic Health Science Centre; Manchester UK
10. Leeds Teaching Hospitals NHS Trust; Leeds UK
11. Newcastle upon Tyne Hospitals NHS Foundation Trust; Newcastle upon Tyne UK
12. Guy's and St Thomas' NHS Foundation Trust; London UK
13. Royal United Hospital; Bath UK
14. Royal National Hospital for Rheumatic Diseases; Bath UK
15. St John's Institute of Dermatology; London UK
16. Glasgow Royal Infirmary, NHS Greater Glasgow and Clyde; Glasgow UK