A Comparative Study of Efficacy of Clonidine and Dexmedetomidine As An Adjuvant to Ropivacaine in Ultrasound Guided Supraclavicular Brachial Plexus Block Vis-À-Vis Onset of Surgical Anaesthesia and Duration of Effect in Upper Limb Surgeries. jmbas [Internet]. 2020 Aug. 11 [cited 2026 Oct. 23];8(8):513-20. Available from: https://jmbm.in/index.php/jmbas/article/view/250