J. . Bajracharya, K. . Pokharel, S. . Khatiwada, and A. . . Subedi, “Analgesic Effectiveness Of Intravenous Ketamine Versus Fentanyl In Patients With Proximal Femur Fracture: A Comparative Study”, Birat J. Health Sci., vol. 9, no. 3, pp. 70–77, Jan. 2025.