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Ziegra CJ, Willard JM, Oswald RE.Ziegra CJ, et al.Proc Natl Acad Sci U S A. 1992 May 1;89(9):4134-8. doi: 10.1073/pnas.89.9.4134.Proc Natl Acad Sci U S A. 1992.PMID: 1315052Free PMC article.
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