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Wills NM, Gesteland RF, Atkins JF.Wills NM, et al. Among authors: gesteland rf.Proc Natl Acad Sci U S A. 1991 Aug 15;88(16):6991-5. doi: 10.1073/pnas.88.16.6991.Proc Natl Acad Sci U S A. 1991.PMID: 1871115Free PMC article.