“Efficacy and Safety of Fentanyl As An Adjuvant With Bupivacaine and Lignocaine in Supraclavicular Brachial Plexus Block”. Chattagram Maa-O-Shishu Hospital Medical College Journal 17, no. 2 (January 14, 2019): 31–35. Accessed June 26, 2026. https://www.banglajol.info/index.php/CMOSHMCJ/article/view/39774.