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Efficacy, safety and patient-reported outcomes of combination etanercept and sulfasalazine versus etanercept alone in patients with rheumatoid arthritis: a double-blind randomised 2-year study.
Combe B, Codreanu C, Fiocco U, Gaubitz M, Geusens PP, Kvien TK, Pavelka K, Sambrook PN, Smolen JS, Khandker R, Singh A, Wajdula J, Fatenejad S; Etanercept European Investigators Network. Combe B, et al. Ann Rheum Dis. 2009 Jul;68(7):1146-52. doi: 10.1136/ard.2007.087106. Epub 2008 Sep 15. Ann Rheum Dis. 2009. PMID: 18794178 Free PMC article. Clinical Trial.