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Witkin EM, Kogoma T.Witkin EM, et al.Proc Natl Acad Sci U S A. 1984 Dec;81(23):7539-43. doi: 10.1073/pnas.81.23.7539.Proc Natl Acad Sci U S A. 1984.PMID: 6390441Free PMC article.
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