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Friedman RS, Lindsay RS, Lilly JK, Nguyen V, Sorensen CM, Jacobelli J, Krummel MF.Friedman RS, et al.Proc Natl Acad Sci U S A. 2014 Jun 24;111(25):9223-8. doi: 10.1073/pnas.1322193111. Epub 2014 Jun 10.Proc Natl Acad Sci U S A. 2014.PMID: 24927530Free PMC article.