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    The effect of vitamin D levels on the assessment of disease activity in rheumatoid arthritis

    Disease activity in rheumatoid arthritis (RA) is assessed by a combination of objective and subjective tests, combined to produce a disease activity score in 28 joints (DAS28). There is some evidence that RA d...

    M. J. Higgins, S. L. Mackie, N. Thalayasingam, S. J. Bingham in Clinical Rheumatology (2013)