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Ugolini G, Marinelli S, Covaceuszach S, Cattaneo A, Pavone F.Ugolini G, et al. Among authors: pavone f.Proc Natl Acad Sci U S A. 2007 Feb 20;104(8):2985-90. doi: 10.1073/pnas.0611253104. Epub 2007 Feb 14.Proc Natl Acad Sci U S A. 2007.PMID: 17301229Free PMC article.