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Schmidt D, Stock UA, Hoerstrup SP.Schmidt D, et al.Philos Trans R Soc Lond B Biol Sci. 2007 Aug 29;362(1484):1505-12. doi: 10.1098/rstb.2007.2131.Philos Trans R Soc Lond B Biol Sci. 2007.PMID: 17588875Free PMC article.Review.