Efficacy and Safety of Fentanyl as An Adjuvant with Bupivacaine and Lignocaine in Supraclavicular Brachial Plexus Block. Chatt Maa Shi Hosp Med Coll J [Internet]. 2019 Jan. 14 [cited 2026 Jun. 26];17(2):31-5. Available from: https://www.banglajol.info/index.php/CMOSHMCJ/article/view/39774