Ahmed, N. U., Hossain, M., Akhtaruzzaman, A., Mondol, M. K., & Khatun, U. S. (2014). Addition of clonidine or fentanyl with bupivacaine for supraclavicular brachial plexus blocks in upper limb surgery - a randomized comparative study. Journal of the Bangladesh Society of Anaesthesiologists, 24(1), 3–7. https://doi.org/10.3329/jbsa.v24i1.19792