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Elmer KR, Kusche H, Lehtonen TK, Meyer A.Elmer KR, et al.Philos Trans R Soc Lond B Biol Sci. 2010 Jun 12;365(1547):1763-82. doi: 10.1098/rstb.2009.0271.Philos Trans R Soc Lond B Biol Sci. 2010.PMID: 20439280Free PMC article.Review.