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Smith KL Jr, Ruhl HA, Kahru M, Huffard CL, Sherman AD.Smith KL Jr, et al. Among authors: huffard cl.Proc Natl Acad Sci U S A. 2013 Dec 3;110(49):19838-41. doi: 10.1073/pnas.1315447110. Epub 2013 Nov 11.Proc Natl Acad Sci U S A. 2013.PMID: 24218565Free PMC article.