Analgesic Effect of Intravenous Versus Intraperitoneal Dexmedetomidine As an Adjuvant to Intraperitoneal Bupivacaine (0.125%) in Laparoscopic Cholecystectomy: A Randomized, Double Blind, Interventional Study . J. Appl. Pharm. Res. 2022, 10, 12-17.