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Trends in antimicrobial resistance in 1,968 invasive Streptococcus pneumoniae strains isolated in Spanish hospitals (2001 to 2003): decreasing penicillin resistance in children's isolates.
Oteo J, Lázaro E, de Abajo FJ, Baquero F, Campos J; Spanish Members of the European Antimicrobial Resistance Surveillance System. Oteo J, et al. J Clin Microbiol. 2004 Dec;42(12):5571-7. doi: 10.1128/JCM.42.12.5571-5577.2004. J Clin Microbiol. 2004. PMID: 15583283 Free PMC article.