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Rauers, Neele I; Stüber, Frank; Lee, Eun-Hae; Musshoff, Frank; Fimmers, Rolf; Barann, Martin; Stamer, Ulrike M (2010). Antagonistic effects of ondansetron and tramadol? A randomized placebo and active drug controlled study. The journal of pain, 11(12), pp. 1274-81. New York, N.Y.: Elsevier 10.1016/j.jpain.2010.03.003
