Frequency and Antimicrobial Sensitivity Pattern of Extended Spectrum β-Lactamases Producing Escherichia coli and Klebsiella pneumoniae Isolated from urine at a Tertiary Care Hospital. J Shaheed Suhrawardy Med Coll [Internet]. 2012 Oct. 2 [cited 2026 Jul. 1];4(1):22-5. Available from: https://www.banglajol.info/index.php/JSSMC/article/view/11999