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. 2019 Jul 8;5(2):e000951. doi: 10.1136/rmdopen-2019-000951

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© Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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RCJ of the wrist pairwise comparisons of synovial biopsy inflammation, US EULAR-OMERACT combined score and MRI RAMRIS synovitis score in all patients with RA, and in patients with ERA and LRA separately. Legend: Comparison between inflammation in synovial biopsies using the Krenn score, combined US EULAR-OMERACT score and the MRI RAMRIS synovitis score in the RCJ of the wrist of all patients with RA (A,B,C), and hereafter divided into ERA (D,E,F) and LRA (G,H,I) patient groups. Comparison by unadjusted linear regression with robust cluster estimation. ERA, early RA, LRA, long-standing RA; RA, rheumatoid arthritis; RCJ, radiocarpal joint.