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Poor knowledge of methotrexate associated with older age and limited English-language proficiency in a diverse rheumatoid arthritis cohort

Jennifer L Barton*, Gabriela Schmajuk, Laura Trupin, Jonathan Graf, John Imboden, Edward H Yelin and Dean Schillinger

Arthritis Research & Therapy 2013, 15:R157  doi:10.1186/ar4340

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