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Vuilleumier P, Driver J.Vuilleumier P, et al.Philos Trans R Soc Lond B Biol Sci. 2007 May 29;362(1481):837-55. doi: 10.1098/rstb.2007.2092.Philos Trans R Soc Lond B Biol Sci. 2007.PMID: 17395574Free PMC article.Review.