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Xie H, Dong ZQ, Ma F, Bauer WR, Wang X, Wu GC. Involvement of serotonin 2A receptors in the analgesic effect of tramadol in mono-arthritic rats. Brain Res. 2008 May 19;1210():76–83. doi: 10.1016/j.brainres.2008.02.049. PMID: 18417104. |