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Pulsed-field gel electrophoresis analysis of 8 CTX-M-positive pediatric Escherichia coli urine isolates from 7 patients. PFGE, pulsed-field gel electrophoresis pulsotype; Phylo, phylogenetic group; ST131, positive (POS) or negative (NEG) for ST131; FQ, fluoroquinolone resistant (R) or susceptible (S); CTX-M-15, positive or negative for blaCTX-M-15.
