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Magne D, Mézin F, Palmer G, Guerne PA (2006). „The active metabolite of leflunomide, A77 1726, increases proliferation of human synovial fibroblasts in presence of IL-1beta and TNF-alpha”. Inflamm. Res.55 (11): 469–75. DOI:10.1007/s00011-006-5196-x. PMID17122964.