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Merrilees CE, Goeke-Morey M, Cummings EM.Merrilees CE, et al.Behav Res Ther. 2008 Feb;46(2):253-62. doi: 10.1016/j.brat.2007.11.007. Epub 2007 Nov 28.Behav Res Ther. 2008.PMID: 18177629Free PMC article.