1. Rheumatology Service, IdiPAZ, La Paz University Hospital, Paseo de la Castellana, 261, Madrid 28046, Spain
2. Health & Territory Research, Universidad de Sevilla, Seville, Spain
3. Rheumatology Service, IdiPAZ, La Paz University Hospital, Madrid, Spain
4. NIHR Leeds Biomedical Research Centre, LTHT and LIRMM, University of Leeds, Leeds, UK
5. Novartis Pharma AG, Basel, Switzerland
6. Spanish Federation of Spondyloarthritis Associations (CEADE), Madrid, Spain
7. NASS, London, UK