Karakterisasi Molekuler gen gyrA dan gyrB pada Quinolone Resistance Determining Region (QRDR) Escherichia coli Resisten Ciprofloxacin yang Diisolasi dari Isolat Klinis Pasien Infeksi Saluran Kemih (ISK) = Molecular Characterization of gyrA and gyrB Genes on Quinolone Resistance Determining Region (QRDR) Ciprofloxacin Resistant Escherichia coli Isolated from Clinical Isolates of Urinary Tract Infection (UTI) Patients