Classification Criteria in Axial Spondyloarthritis: What Have We Learned; Where Are We Going?

Rhys J Hayward1, Pedro M Machado2

  • 1Department of Rheumatology, Northwick Park Hospital, London North West University Healthcare NHS Trust, Watford Road, Harrow, Middlesex HA1 3UJ, London, UK; Department of Rheumatology, University College London Hospitals NHS Foundation Trust, 3rd Floor, 250 Euston Road, NW1 2PG, London, UK.

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