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Bowie JU, Eisenberg D.Bowie JU, et al.Proc Natl Acad Sci U S A. 1994 May 10;91(10):4436-40. doi: 10.1073/pnas.91.10.4436.Proc Natl Acad Sci U S A. 1994.PMID: 8183927Free PMC article.