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APA Citation
Combe, B., Codreanu, C., Fiocco, U., Gaubitz, M., Geusens, P. P., Kvien, T. K., Pavelka, K., Sambrook, P. N., Smolen, J. S., Wajdula, J., & Fatenejad, S. (2006). etanercept and sulfasalazine, alone and combined, in patients with active rheumatoid arthritis despite receiving sulfasalazine: a double-blind comparison. Annals of the rheumatic diseases, 65(10), 1357–1362. http://access.bl.uk/ark:/81055/vdc_100130160898.0x000063