Manu Seth, Rajeev Das and Rubal Singhal 2020. Comparison of Dexamethasone and Tramadol as Adjuvant to Levobupivacaine in Supraclavicular Block. Academia Anesthesiologica International. 4, 2 (Jan. 2020), 317-319. DOI:https://doi.org/10.21276/aan.2019.4.2.71.