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Boyd LF, Kozlowski S, Margulies DH.Boyd LF, et al. Among authors: margulies dh.Proc Natl Acad Sci U S A. 1992 Mar 15;89(6):2242-6. doi: 10.1073/pnas.89.6.2242.Proc Natl Acad Sci U S A. 1992.PMID: 1549590Free PMC article.