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Martino G, Clementi E, Brambilla E, Moiola L, Comi G, Meldolesi J, Grimaldi LM.Martino G, et al. Among authors: comi g.Proc Natl Acad Sci U S A. 1994 May 24;91(11):4825-9. doi: 10.1073/pnas.91.11.4825.Proc Natl Acad Sci U S A. 1994.PMID: 8197142Free PMC article.