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McGuire JT, Botvinick MM.McGuire JT, et al.Proc Natl Acad Sci U S A. 2010 Apr 27;107(17):7922-6. doi: 10.1073/pnas.0910662107. Epub 2010 Apr 12.Proc Natl Acad Sci U S A. 2010.PMID: 20385798Free PMC article.