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. 2021 Jan 29;7(1):e001511. doi: 10.1136/rmdopen-2020-001511

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© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

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Flow charts of search and selection of papers. (A) (Mis-)diagnosis of RA and relevant differential diagnoses. (B) The assessment of inflammatory activity in (2a) RA patients, and (2b) RA patients with comorbidities that might influence the assessment. RA, rheumatoid arthritis; SLR, systematic literature review.