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Wild CT, Shugars DC, Greenwell TK, McDanal CB, Matthews TJ.Wild CT, et al. Among authors: matthews tj.Proc Natl Acad Sci U S A. 1994 Oct 11;91(21):9770-4. doi: 10.1073/pnas.91.21.9770.Proc Natl Acad Sci U S A. 1994.PMID: 7937889Free PMC article.