S. Kashif, T. A. Khan, N. Parveen, N. U. S. Khan, and S. Ahmed, “COMPARISON OF EMERGENCY SURGERIES UNDER SPINAL ANESTHESIA IN COVID-19 PANDEMIC WITH PRE-COVID PERIOD IN A TERTIARY CARE HOSPITAL OF A DEVELOPING COUNTRY”, Pak Armed Forces Med J, vol. 71, no. 4, pp. 1138–41, Aug. 2021, doi: 10.51253/pafmj.v71i4.6475.