1. Department of Rheumatology; Yonsei University Wonju College of Medicine; Wonju Republic of Korea
2. Leeds Institute of Rheumatic and Musculoskeletal Medicine; University of Leeds; Chapel Allerton Hospital; Chapeltown Road Leeds LS7 4SA UK
3. NIHR Leeds Musculoskeletal Biomedical Research Unit; Leeds Teaching Hospitals NHS Trust; Leeds UK