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Smith DL, Harris AD, Johnson JA, Silbergeld EK, Morris JG Jr.Smith DL, et al. Among authors: harris ad.Proc Natl Acad Sci U S A. 2002 Apr 30;99(9):6434-9. doi: 10.1073/pnas.082188899. Epub 2002 Apr 23.Proc Natl Acad Sci U S A. 2002.PMID: 11972035Free PMC article.