Vijay Siddhartha B S, and Ranjini BN. “Femoral Nerve Block and Intravenous Fentanyl for Positioning During Spinal Anesthesia in Surgery of Femur Fractures: Hemodynamic Changes”. Academia Anesthesiologica International 4, no. 2 (January 9, 2020): 346-349. Accessed July 22, 2024. https://aijournals.com/index.php/aan/article/view/1309.