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Agnarsson I, Kuntner M, May-Collado LJ.Agnarsson I, et al.Mol Phylogenet Evol. 2010 Mar;54(3):726-45. doi: 10.1016/j.ympev.2009.10.033. Epub 2009 Nov 10.Mol Phylogenet Evol. 2010.PMID: 19900567