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SAT0449 Progression from undifferentiated spondyloarthritis to ankylosing spondylitis: Is USPA a proxy for non-radiographic axial SPA?

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Boonen A, Kirson N, Rao S, et al
SAT0449 Progression from undifferentiated spondyloarthritis to ankylosing spondylitis: Is USPA a proxy for non-radiographic axial SPA?

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  • First published January 23, 2014.
Online issue publication 
February 22, 2018

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