Affiliations

• ¹ Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds and Leeds Musculoskeletal Biomedical Research Unit, Leeds Teaching Hospitals NHS Trust, Leeds UK.
• ² Department of rheumatology, Sorbonne Universités, UPMC Univ Paris 06; AP-HP, Pitié Salpêtrière Hospital, Paris, France.
• ³ Department of Rheumatology, Leiden University Medical Centre, Leiden, The Netherlands.
• ⁴ Swedish Medical Center Seattle, WA, USA.
• ⁵ Division of Rheumatology, Department of Medicine 3, Medical University of Vienna.
• ⁶ 2nd Department of Medicine, Hietzing Hospital, Vienna, Austria.
• ⁷ Allergy, Immunology & Rheumatology Division, University of Rochester Medical Center, Rochester, NY.
• ⁸ Division of Rheumatology, Allergy Immunology, University of California San Diego, USA.