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