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LaHoste GJ, Yu J, Marshall JF.LaHoste GJ, et al.Proc Natl Acad Sci U S A. 1993 Aug 15;90(16):7451-5. doi: 10.1073/pnas.90.16.7451.Proc Natl Acad Sci U S A. 1993.PMID: 8102797Free PMC article.