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Cho BK, Barrett CL, Knight EM, Park YS, Palsson BØ.Cho BK, et al.Proc Natl Acad Sci U S A. 2008 Dec 9;105(49):19462-7. doi: 10.1073/pnas.0807227105. Epub 2008 Dec 3.Proc Natl Acad Sci U S A. 2008.PMID: 19052235Free PMC article.