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Gelfand MS, Mironov AA, Pevzner PA.Gelfand MS, et al.Proc Natl Acad Sci U S A. 1996 Aug 20;93(17):9061-6. doi: 10.1073/pnas.93.17.9061.Proc Natl Acad Sci U S A. 1996.PMID: 8799154Free PMC article.