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Trevathan W.Trevathan W.Philos Trans R Soc Lond B Biol Sci. 2015 Mar 5;370(1663):20140065. doi: 10.1098/rstb.2014.0065.Philos Trans R Soc Lond B Biol Sci. 2015.PMID: 25602069Free PMC article.Review.