ASAS Consensus on Spanish Nomenclature for Spondyloarthritis - Navarro-Compan, Victoria; Oton-Sanchez, Teresa; Loza, Estibaliz; Almodovar Gonzalez, Raquel; Ariza, Rafael; Bautista-Molano, Wilson; Burgos-Vargas, Ruben; Collantes Estevez, Eduardo; De Miguel, Eugenio; Gonzalez, Carlos M; Gratacos-Masmitja, Jordi; Ibanez, Sebastian; et al. (Arthritis & Rheumatology, 2018)