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Siegmund KD, Marjoram P, Woo YJ, Tavaré S, Shibata D.Siegmund KD, et al.Proc Natl Acad Sci U S A. 2009 Mar 24;106(12):4828-33. doi: 10.1073/pnas.0810276106. Epub 2009 Mar 4.Proc Natl Acad Sci U S A. 2009.PMID: 19261858Free PMC article.