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Dougill AJ, Stringer LC, Leventon J, Riddell M, Rueff H, Spracklen DV, Butt E.Dougill AJ, et al. Among authors: spracklen dv.Philos Trans R Soc Lond B Biol Sci. 2012 Nov 19;367(1606):3178-90. doi: 10.1098/rstb.2011.0418.Philos Trans R Soc Lond B Biol Sci. 2012.PMID: 23045714Free PMC article.