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Biegel E, Müller V.Biegel E, et al. Among authors: muller v.Proc Natl Acad Sci U S A. 2010 Oct 19;107(42):18138-42. doi: 10.1073/pnas.1010318107. Epub 2010 Oct 4.Proc Natl Acad Sci U S A. 2010.PMID: 20921383Free PMC article.