Mohamed Moussa, M. E., Awad, H. G., Hamid, H. S., Abdellatif, A. and Sharaf, A. (2022) “A comparative study between femoral nerve block and intravenous ketamine for pain management during positioning for spinal anesthesia in elderly patients with femur fracture”, Anaesthesia, Pain & Intensive Care, 26(3), pp. 297-303. doi: 10.35975/apic.v26i3.1895.