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Pettay DT, Wham DC, Smith RT, Iglesias-Prieto R, LaJeunesse TC.Pettay DT, et al.Proc Natl Acad Sci U S A. 2015 Jun 16;112(24):7513-8. doi: 10.1073/pnas.1502283112. Epub 2015 Jun 1.Proc Natl Acad Sci U S A. 2015.PMID: 26034268Free PMC article.