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Saporito RA, Garraffo HM, Donnelly MA, Edwards AL, Longino JT, Daly JW.Saporito RA, et al.Proc Natl Acad Sci U S A. 2004 May 25;101(21):8045-50. doi: 10.1073/pnas.0402365101. Epub 2004 May 5.Proc Natl Acad Sci U S A. 2004.PMID: 15128938Free PMC article.
Saporito RA, Donnelly MA, Norton RA, Garraffo HM, Spande TF, Daly JW.Saporito RA, et al.Proc Natl Acad Sci U S A. 2007 May 22;104(21):8885-90. doi: 10.1073/pnas.0702851104. Epub 2007 May 14.Proc Natl Acad Sci U S A. 2007.PMID: 17502597Free PMC article.