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Pagano MB, Bartoli MA, Ennis TL, Mao D, Simmons PM, Thompson RW, Pham CT.Pagano MB, et al. Among authors: simmons pm.Proc Natl Acad Sci U S A. 2007 Feb 20;104(8):2855-60. doi: 10.1073/pnas.0606091104. Epub 2007 Feb 14.Proc Natl Acad Sci U S A. 2007.PMID: 17301245Free PMC article.