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Acheson A, Farrar AM, Patak M, Hausknecht KA, Kieres AK, Choi S, de Wit H, Richards JB.Acheson A, et al. Among authors: richards jb.Behav Brain Res. 2006 Oct 16;173(2):217-28. doi: 10.1016/j.bbr.2006.06.024. Epub 2006 Aug 1.Behav Brain Res. 2006.PMID: 16884790Free PMC article.