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ASAS recommendations for the use of an anti-TNF agent in patients with axial SpA.
AS, ankylosing spondylitis; ASAS, Assessment of Spondyloarthritis International Society; BASDAI, the Bath Ankylosing Spondylitis Disease Activity Index; CRP, C-reactive protein; DMARD, disease-modifying antirheumatic drug; ESR, erythrocyte sedimentation rate; MRI, magnetic resonance imaging; NSAID, nonsteroidal anti-inflammatory drug; SpA, spondyloarthritis; TNF, tumour necrosis factor.
