[1] Univ Seville, Hlth & Terr Res HTR, Seville, Spain
[2] Spanish Federat Spondyloarthrit Assoc CEADE, Madrid, Spain
[3] Charite Univ Med Berlin, Dept Rheumatol, Berlin, Germany
[4] Cardiff Univ, Sch Healthcare Sci, Cardiff, Wales
[5] Novartis Pharma AG, Patient Engagement, Basel, Switzerland
[6] Axial Spondyloarthrist Int Federat ASIF, London, England
[7] Cyprus League Rheumatism CYPLAR, Nicosia, Cyprus
[8] Hosp Univ La Paz, IdiPaz, Madrid, Spain