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Aim
To evaluate the effect of tumor necrosis factor α inhibitors (TNFi) on spinal radiographic progression in patients with ankylosing spondylitis (AS).
Methods
Subjects were selected from patients at a single tertiary hospital between 1995 and 2014. Patients who used TNFi with baseline and paired follow‐up radiographic data with a minimum interval of 2 years were included. Time to start TNFi was...
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