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Detection of resistance to beta-lactamase inhibitors in strains with CTX-M beta-lactamases: a multicenter external proficiency study using a well-defined collection of Escherichia coli strains.
Ripoll A, Galán JC, Rodríguez C, Tormo N, Gimeno C, Baquero F, Martínez-Martínez L, Cantón R; SEIMC Quality Control Study Group. Ripoll A, et al. J Clin Microbiol. 2014 Jan;52(1):122-9. doi: 10.1128/JCM.02340-13. Epub 2013 Oct 23. J Clin Microbiol. 2014. PMID: 24153133 Free PMC article.