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Schünke S, Stoldt M, Lecher J, Kaupp UB, Willbold D.Schünke S, et al.Proc Natl Acad Sci U S A. 2011 Apr 12;108(15):6121-6. doi: 10.1073/pnas.1015890108. Epub 2011 Mar 23.Proc Natl Acad Sci U S A. 2011.PMID: 21430265Free PMC article.