Characteristics associated with the presence and development of extra-articular manifestations in ankylosing spondylitis: 12-year results from OASIS

Affiliations

• ¹ Department of Medicine, Maastricht University Medical Center, School for Public Health and Primary Care (CAPHRI), University of Maastricht, Maastricht, Department of Clinical Immunology & Rheumatology, Amsterdam Rheumatology Center, University of Amsterdam, Amsterdam, The Netherlands, Department of Rheumatology, Hospital Garcia de Orta, Almada, Portugal, Department of Medicine, Catherina Hospital, Eindhoven, Department of Rheumatology, Atrium Medical Center, Heerlen, Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands, Department of Rheumatology, Ghent University Hospital and University of Ghent, Ghent, Belgium and Rheumatology Department, Paris-Descartes University, Cochin Hospital, Paris, France. Department of Medicine, Maastricht University Medical Center, School for Public Health and Primary Care (CAPHRI), University of Maastricht, Maastricht, Department of Clinical Immunology & Rheumatology, Amsterdam Rheumatology Center, University of Amsterdam, Amsterdam, The Netherlands, Department of Rheumatology, Hospital Garcia de Orta, Almada, Portugal, Department of Medicine, Catherina Hospital, Eindhoven, Department of Rheumatology, Atrium Medical Center, Heerlen, Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands, Department of Rheumatology, Ghent University Hospital and University of Ghent, Ghent, Belgium and Rheumatology Department, Paris-Descartes University, Cochin Hospital, Paris, France. ivette.essers@maastrichtuniversity.nl.
• ² Department of Medicine, Maastricht University Medical Center, School for Public Health and Primary Care (CAPHRI), University of Maastricht, Maastricht, Department of Clinical Immunology & Rheumatology, Amsterdam Rheumatology Center, University of Amsterdam, Amsterdam, The Netherlands, Department of Rheumatology, Hospital Garcia de Orta, Almada, Portugal, Department of Medicine, Catherina Hospital, Eindhoven, Department of Rheumatology, Atrium Medical Center, Heerlen, Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands, Department of Rheumatology, Ghent University Hospital and University of Ghent, Ghent, Belgium and Rheumatology Department, Paris-Descartes University, Cochin Hospital, Paris, France. Department of Medicine, Maastricht University Medical Center, School for Public Health and Primary Care (CAPHRI), University of Maastricht, Maastricht, Department of Clinical Immunology & Rheumatology, Amsterdam Rheumatology Center, University of Amsterdam, Amsterdam, The Netherlands, Department of Rheumatology, Hospital Garcia de Orta, Almada, Portugal, Department of Medicine, Catherina Hospital, Eindhoven, Department of Rheumatology, Atrium Medical Center, Heerlen, Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands, Department of Rheumatology, Ghent University Hospital and University of Ghent, Ghent, Belgium and Rheumatology Department, Paris-Descartes University, Cochin Hospital, Paris, France.
• ³ Department of Medicine, Maastricht University Medical Center, School for Public Health and Primary Care (CAPHRI), University of Maastricht, Maastricht, Department of Clinical Immunology & Rheumatology, Amsterdam Rheumatology Center, University of Amsterdam, Amsterdam, The Netherlands, Department of Rheumatology, Hospital Garcia de Orta, Almada, Portugal, Department of Medicine, Catherina Hospital, Eindhoven, Department of Rheumatology, Atrium Medical Center, Heerlen, Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands, Department of Rheumatology, Ghent University Hospital and University of Ghent, Ghent, Belgium and Rheumatology Department, Paris-Descartes University, Cochin Hospital, Paris, France.