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Macdonald-Obermann JL, Piwnica-Worms D, Pike LJ.Macdonald-Obermann JL, et al.Proc Natl Acad Sci U S A. 2012 Jan 3;109(1):137-42. doi: 10.1073/pnas.1111316109. Epub 2011 Dec 21.Proc Natl Acad Sci U S A. 2012.PMID: 22190492Free PMC article.