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Blas J, Pérez-Rodríguez L, Bortolotti GR, Viñuela J, Marchant TA.Blas J, et al. Among authors: vinuela j.Proc Natl Acad Sci U S A. 2006 Dec 5;103(49):18633-7. doi: 10.1073/pnas.0609189103. Epub 2006 Nov 22.Proc Natl Acad Sci U S A. 2006.PMID: 17121984Free PMC article.