[1] Univ Seville, Hlth & Terr Res HTR, Seville, Spain
[2] Spanish Federat Spondyloarthritis Associat CEADE, Patient Advocacy, Madrid, Spain
[3] Charite, Rheumatol Dept, Berlin, Germany
[4] Rheumatol Dept, German Rheumatism Res Ctr, Berlin, Germany
[5] Sanatorio Julio Mendez, Rheumatol Dept, Buenos Aires, DF, Argentina
[6] Cardiff Univ, Sch Healthcare Sci, Cardiff, Wales
[7] Cyprus League People Rheumatism CYLPER, Patient Advocacy, Nicosia, Cyprus
[8] Mumbai Arthrit Clin, Rheumatol Dept, Mumbai, Maharashtra, India
[9] Axial Spondyloarthrit Int Federat ASIF, Patient Advocacy, London, England
[10] Canadian Spondylitis Assoc CSA, Patient Advocacy, Toronto, ON, Canada
[11] Novartis Pharma AG, Patient Engagement, Basel, Switzerland
[12] Hosp Univ La Paz, Rheumatol Dept, IdiPaz, Madrid, Spain