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Turecek R, Trussell LO.Turecek R, et al. Among authors: trussell lo.Proc Natl Acad Sci U S A. 2002 Oct 15;99(21):13884-9. doi: 10.1073/pnas.212419699. Epub 2002 Oct 7.Proc Natl Acad Sci U S A. 2002.PMID: 12370408Free PMC article.