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Vigliani MC, Magistrello M, Polo P, Mutani R, Chiò A; Piemonte and Valle d'Aosta Register for Guillain-Barré Syndrome.Vigliani MC, et al. Among authors: chio a.J Neurol. 2004 Mar;251(3):321-6. doi: 10.1007/s00415-004-0317-3.J Neurol. 2004.PMID: 15015013