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Marchese A, Ramirez M, Schito GC, Tomasz A.Marchese A, et al. Among authors: ramirez m.J Clin Microbiol. 1998 Oct;36(10):2944-9. doi: 10.1128/JCM.36.10.2944-2949.1998.J Clin Microbiol. 1998.PMID: 9738048Free PMC article.
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Silva-Costa C, Ramirez M, Melo-Cristino J; Portuguese Surveillance Group for the Study of Respiratory Pathogens.Silva-Costa C, et al. Among authors: ramirez m.Antimicrob Agents Chemother. 2005 May;49(5):2109-11. doi: 10.1128/AAC.49.5.2109-2111.2005.Antimicrob Agents Chemother. 2005.PMID: 15855540Free PMC article.
Melo-Cristino J, Santos L, Ramirez M; Grupo de Estudo Português de Bactérias Patogénicas Respiratórias.Melo-Cristino J, et al. Among authors: ramirez m.Rev Port Pneumol. 2006 Jan-Feb;12(1):9-30.Rev Port Pneumol. 2006.PMID: 16572254Free article.English, Portuguese.