1 NIHR Leeds Biomedical Research Centre, Leeds Teaching Hospitals Trust and Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK. H.Marzo-Ortega@leeds.ac.uk.
2 University Hospital La Paz, IdiPaz, Madrid, Spain.
3 Department of Internal Medicine, Division of Rheumatology, Katip Çelebi University, İzmir, Turkey.
4 Rheumazentrum Ruhrgebiet, Herne and Ruhr-Universität Bochum, Bochum, Germany.
5 Patient Author, Norwich, UK.
6 Centre for Rheumatic Diseases, King's College and Rheumatology Department, King's College Hospital, London, UK.