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Sheppard SK, Didelot X, Meric G, Torralbo A, Jolley KA, Kelly DJ, Bentley SD, Maiden MC, Parkhill J, Falush D.Sheppard SK, et al. Among authors: didelot x.Proc Natl Acad Sci U S A. 2013 Jul 16;110(29):11923-7. doi: 10.1073/pnas.1305559110. Epub 2013 Jul 1.Proc Natl Acad Sci U S A. 2013.PMID: 23818615Free PMC article.
Falush D, Torpdahl M, Didelot X, Conrad DF, Wilson DJ, Achtman M.Falush D, et al. Among authors: didelot x.Philos Trans R Soc Lond B Biol Sci. 2006 Nov 29;361(1475):2045-53. doi: 10.1098/rstb.2006.1925.Philos Trans R Soc Lond B Biol Sci. 2006.PMID: 17062419Free PMC article.