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Lakowski B, Hekimi S.Lakowski B, et al.Proc Natl Acad Sci U S A. 1998 Oct 27;95(22):13091-6. doi: 10.1073/pnas.95.22.13091.Proc Natl Acad Sci U S A. 1998.PMID: 9789046Free PMC article.