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Biesecker LG, Gottschalk LR, Emerson SG.Biesecker LG, et al. Among authors: gottschalk lr.Proc Natl Acad Sci U S A. 1993 Aug 1;90(15):7044-8. doi: 10.1073/pnas.90.15.7044.Proc Natl Acad Sci U S A. 1993.PMID: 8346215Free PMC article.