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Varon E, Houssaye S, Grondin S, Gutmann L; Groupe des Observatoires de la Résistance du Pneumocoque.Varon E, et al.Antimicrob Agents Chemother. 2006 Feb;50(2):572-9. doi: 10.1128/AAC.50.2.572-579.2006.Antimicrob Agents Chemother. 2006.PMID: 16436712Free PMC article.