surveillance for plasmid-mediated quinolone resistance determinants in enterobacteriaceae within the calgary health region, canada: the emergence of aac(6')-ib-cr. | a study was designed to determine the prevalence of plasmid-mediated quinolone resistance (pmqr) determinants among clinical isolates of enterobacteriaceae from the calgary health region (chr). | 2008 | 18296438 |