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Wyatt LS, Earl PL, Eller LA, Moss B.Wyatt LS, et al.Proc Natl Acad Sci U S A. 2004 Mar 30;101(13):4590-5. doi: 10.1073/pnas.0401165101. Epub 2004 Mar 11.Proc Natl Acad Sci U S A. 2004.PMID: 15070762Free PMC article.