1. Department of Rheumatology, Yonsei Univeristy Wonju College of Medicine, Wonju, Republic of Korea
2. Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Policlinico S. Matteo, Pavia, Italy
3. Division of Rheumatic and Musculoskeletal Disease and NIHR Leeds Musculoskeletal Biomedical Research Unit (LMBRU), University of Leeds, Leeds, UK
4. Senior Lecturer and Consultant in Rheumatology, Division of Rheumatic and Musculoskeletal Disease and NIHR Leeds Musculoskeletal Biomedical Research Unit (LMBRU), Chapel Allerton Hospital, Leeds LS7 4SA, UK