Comparative Study of Dexmedetomidine versus Fentanyl as an adjuvant to Ropivacaine (0.75%) in Epidural Anaesthesia in Lower Limb Orthopaedic Surgery - Biradar, Vijayalaxmi; Patel, Mamta; Patel, Kavan; Panditrao, Mridul (Archives of Anesthesiology and Critical Care, 2024)