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Cho KK, Khibnik L, Philpot BD, Bear MF.Cho KK, et al. Among authors: philpot bd.Proc Natl Acad Sci U S A. 2009 Mar 31;106(13):5377-82. doi: 10.1073/pnas.0808104106. Epub 2009 Mar 10.Proc Natl Acad Sci U S A. 2009.PMID: 19276107Free PMC article.