Sattar, Abdul, Farah Faqir, Shahid Ahmed Abbasi, Ali Fraz, and Zaki Hussain. 2009. “CHANGING TRENDS IN FREQUENCY OF EXTENDED SPECTRUM BETA LACTAMASE PRODUCING GRAM NEGATIVE BACILLI IN INTENSIVE CARE UNITS OF A TERTIARY CARE HOSPITAL: Changing Trends in Frequency of Expended Spectrum Beta Lactamase”. Pakistan Armed Forces Medical Journal 59 (3): 271-74. https://pafmj.org/PAFMJ/article/view/1715.