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Visser ME, Caro SP, van Oers K, Schaper SV, Helm B.Visser ME, et al. Among authors: schaper sv.Philos Trans R Soc Lond B Biol Sci. 2010 Oct 12;365(1555):3113-27. doi: 10.1098/rstb.2010.0111.Philos Trans R Soc Lond B Biol Sci. 2010.PMID: 20819807Free PMC article.Review.