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Swithers SE, Laboy AF, Clark K, Cooper S, Davidson TL.Swithers SE, et al. Among authors: davidson tl.Behav Brain Res. 2012 Jul 15;233(1):1-14. doi: 10.1016/j.bbr.2012.04.024. Epub 2012 Apr 26.Behav Brain Res. 2012.PMID: 22561130Free PMC article.