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Scott DL, Smolen JS, Kalden JR, van de Putte LB, Larsen A, Kvien TK, Schattenkirchner M, Nash P, Oed C, Loew-Friedrich I; European Leflunomide Study Group.Scott DL, et al. Among authors: smolen js.Ann Rheum Dis. 2001 Oct;60(10):913-23. doi: 10.1136/ard.60.10.913.Ann Rheum Dis. 2001.PMID: 11557646Free PMC article.Clinical Trial.