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Hannan S, Wilkins ME, Smart TG.Hannan S, et al. Among authors: wilkins me.Proc Natl Acad Sci U S A. 2012 Jul 24;109(30):12171-6. doi: 10.1073/pnas.1201660109. Epub 2012 Jul 9.Proc Natl Acad Sci U S A. 2012.PMID: 22778417Free PMC article.