Paiva AL, Lincopan N, Silva KC, Neves PR, Moreno AM, McCulloch JA, Astolfi-Ferreira CS, Ferreira AJ (2013) Low-virulence phylogenetic background of CTX-M-producing Escherichia coli isolated from extraintestinal infections. J Infect Dev Ctries 7:756–760. doi: 10.3855/jidc.3781