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Nilsen J, Brinton RD.Nilsen J, et al. Among authors: brinton rd.Proc Natl Acad Sci U S A. 2003 Sep 2;100(18):10506-11. doi: 10.1073/pnas.1334098100. Epub 2003 Aug 18.Proc Natl Acad Sci U S A. 2003.PMID: 12925744Free PMC article.