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The development of Assessment of SpondyloArthritis international Society classification criteria for axial spondyloarthritis (part II): validation and final selection
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  • Published on:
    A simple 'instrument' for memorizing the 11 features of axial spondyloarthritis (axSpA)
    Dear Editor,

    For the classification of axial spondyloarthritis (axSpA) Assessment of SpondyloArthritis international Society (ASAS) criteria are to be applied in patients with back pain of > 3 months and age at onset of back pain <45 years who have:
    (1) Sacroiliitis on imaging (definite sacroiliitis according to modified New York criteria OR active {acute}) inflammation on MRI highly suggestive of sacroiliitis assoc...

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    Conflict of Interest:
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