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APA Citation
Curtis, J. R., Beukelman, T., Onofrei, A., Cassell, S., Greenberg, J. D., Kavanaugh, A., Reed, G., Strand, V., & Kremer, J. M. (2010). elevated liver enzyme tests among patients with rheumatoid arthritis or psoriatic arthritis treated with methotrexate and/or leflunomide. Annals of the rheumatic diseases, 69(01), 43–47. http://access.bl.uk/ark:/81055/vdc_100135134576.0x000058