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Cerling TE, Ehleringer JR, Harris JM.Cerling TE, et al.Philos Trans R Soc Lond B Biol Sci. 1998 Jan 29;353(1365):159-70; discussion 170-1. doi: 10.1098/rstb.1998.0198.Philos Trans R Soc Lond B Biol Sci. 1998.PMID: 9507562Free PMC article.Review.