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Lee SJ, Baserga SJ.Lee SJ, et al. Among authors: baserga sj.Proc Natl Acad Sci U S A. 1997 Dec 9;94(25):13536-41. doi: 10.1073/pnas.94.25.13536.Proc Natl Acad Sci U S A. 1997.PMID: 9391061Free PMC article.