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Weber KS, Li QJ, Persaud SP, Campbell JD, Davis MM, Allen PM.Weber KS, et al.Proc Natl Acad Sci U S A. 2012 Jun 12;109(24):9511-6. doi: 10.1073/pnas.1202408109. Epub 2012 May 29.Proc Natl Acad Sci U S A. 2012.PMID: 22645349Free PMC article.