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Vass RH, Chien P.Vass RH, et al.Proc Natl Acad Sci U S A. 2013 Nov 5;110(45):18138-43. doi: 10.1073/pnas.1311302110. Epub 2013 Oct 21.Proc Natl Acad Sci U S A. 2013.PMID: 24145408Free PMC article.