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Haley DW, Cordick J, Mackrell S, Antony I, Ryan-Harrison M.Haley DW, et al.Biol Lett. 2011 Feb 23;7(1):136-8. doi: 10.1098/rsbl.2010.0565. Epub 2010 Aug 25.Biol Lett. 2011.PMID: 20739315Free PMC article.