https://doi.org/10.1016/j.bjane.2015.08.017
Braz J Anesthesiol, vol.67, 2017 Femoral nerve block versus intravenous fentanyl in adult patients with hip fractures - a systematic review Review Article
Braz J Anesthesiol, vol.67, 2017 Femoral nerve block versus intravenous fentanyl in adult patients with hip fractures - a systematic review Review Article