Jalil-Ur-Rehman Butt, Riffat Saeed, Amer Latif, Tariq Ali Bangash, Zia Us Salam Qazi, Saeeda Rana, “Comparison of Post-operative Mean Pain Score with Intravenous Ketorolac Versus Ibuprofen Infusion in Patients Undergoing Open Cholecystectomy Under General Anesthesia”, Pakistan Journal of Medical & Health Sciences, vol. 18, no. 01, p. 220, Jan. 2024.