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Sullivan BM, Emonet SF, Welch MJ, Lee AM, Campbell KP, de la Torre JC, Oldstone MB.Sullivan BM, et al. Among authors: welch mj.Proc Natl Acad Sci U S A. 2011 Feb 15;108(7):2969-74. doi: 10.1073/pnas.1019304108. Epub 2011 Jan 26.Proc Natl Acad Sci U S A. 2011.PMID: 21270335Free PMC article.