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Salas A, Fachal L, Marcos-Alonso S, Vega A, Martinón-Torres F; Grupo de investigación ESIGEM (Estudio Sobre la Influencia Genética en la Enfermedad Meningocócica).Salas A, et al. Among authors: fachal l.PLoS One. 2009 Dec 17;4(12):e8347. doi: 10.1371/journal.pone.0008347.PLoS One. 2009.PMID: 20019817Free PMC article.