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Methotrexate polyglutamates in erythrocytes are associated with lower disease activity in patients with rheumatoid arthritis.
de Rotte MC, den Boer E, de Jong PH, Pluijm SM, Ćalasan MB, Weel AE, Huisman AM, Gerards AH, van Schaeybroeck B, Wulffraat NM, Lindemans J, Hazes JM, de Jonge R. de Rotte MC, et al. Among authors: calasan mb. Ann Rheum Dis. 2015 Feb;74(2):408-14. doi: 10.1136/annrheumdis-2013-203725. Epub 2013 Dec 2. Ann Rheum Dis. 2015. PMID: 24297383
Association of low baseline levels of erythrocyte folate with treatment nonresponse at three months in rheumatoid arthritis patients receiving methotrexate.
de Rotte MC, de Jong PH, Pluijm SM, Calasan MB, Barendregt PJ, van Zeben D, van der Lubbe PA, de Sonnaville PB, Lindemans J, Hazes JM, de Jonge R. de Rotte MC, et al. Among authors: calasan mb. Arthritis Rheum. 2013 Nov;65(11):2803-13. doi: 10.1002/art.38113. Arthritis Rheum. 2013. PMID: 24166792 Free article. Clinical Trial.