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. 2021 Jan 29;23:43. doi: 10.1186/s13075-021-02428-8

Fig. 3.

Fig. 3

Proportion of patients with axial spondyloarthritis with decrease or increase in erosion (a), increase or decrease in backfill (b) according to ASDAS outcome, baseline to week 104. ASDAS Ankylosing Spondylitis Disease Activity Score