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Merrill RA, Plum LA, Kaiser ME, Clagett-Dame M.Merrill RA, et al.Proc Natl Acad Sci U S A. 2002 Mar 19;99(6):3422-7. doi: 10.1073/pnas.052017399.Proc Natl Acad Sci U S A. 2002.PMID: 11904404Free PMC article.