Khan, Umer, et al. “Comparison Between Lignocaine Intravenous Lignocaine Infusion and Ketorolac in Reducing Postoperative Opioid Requirement in Upper Limb Surgeries”. Pakistan Armed Forces Medical Journal, vol. 72, no. 1, June 2022, pp. 29-33, https://doi.org/10.51253/pafmj.v72i1.4390.