Sarwar, Mariam, et al. “Changing Trends of Antimicrobial Resistance in Clinical Isolates Yielded from Lower Respiratory Tract Specimens of ICU Patients-A Two-Year Study”. Pakistan Armed Forces Medical Journal, vol. 73, no. 4, Aug. 2023, pp. 968-72, https://doi.org/10.51253/pafmj.v73i4.7168.