1. Kattel HP, Acharya J, Mishra SK, Rijal BP, Pokhrel BM. Bacteriology of urinary tract infection among patients attending Tribhuvan University Teaching Hospital, Kathmandu, Nepal. J Nepal Assoc Med Lab Sci. 2008;9:25–9.
2. Nachimuthu R, Sumathi CS, Balasubramanian V, Palaniappan KR, Kannan VR. Urinary tract infection and antimicrobial susceptibility pattern of extended spectrum of beta lactamase producing clinical isolates. Adv Biol Res. 2008;2:78–82.
3. Thirapanmethee K. Extended spectrum β-lactamases: critical tools of bacterial resistance. Mahidol Univ J Pharm Sci. 2012;39:1–8.
4. Bradford PA. Extended-Spectrum β-Lactamases in the 21st Century: characterization, epidemiology, and detection of this important resistance threat. Clin Microbiol Rev. 2001;14:933–51.
5. Mukherjee M, Basu S, Mukherjee SK, Majumder M. Multidrug-resistance and extended spectrum beta-lactamase production in uropathogenic E. coli which were isolated from hospitalized patients in Kolkata, India. J Clin Diagn Res. 2013;7:449–53.