The UltraSound-CLinical ARthritis Activity (US-CLARA) index: Properties of a new composite disease activity index for rheumatoid arthritis.
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Semin Arthritis Rheum. 2018 Apr;47(5):619-629. doi: 10.1016/j.semarthrit.2017.09.013. Epub 2017 Sep 28.
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PMID: 29102157