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Poelma C, Van der Heiden K, Hierck BP, Poelmann RE, Westerweel J.Poelma C, et al.J R Soc Interface. 2010 Jan 6;7(42):91-103. doi: 10.1098/rsif.2009.0063. Epub 2009 Apr 28.J R Soc Interface. 2010.PMID: 19401309Free PMC article.