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We thank Zhou et al for their interest in our publication on the share of enthesitis and synovitis in peripheral arthritis in early onset spondyloarthritis (SpA).1
The aim of our study was to assess the validity of the hypothesis by McGonagle et al2 proposing that in peripheral arthritis, synovitis is the primary feature in rheumatoid arthritis (RA), whereas, enthesitis is the primary lesion in SpA. The …
Competing interests None.
Provenance and peer review Commissioned; internally peer reviewed.
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