BhattaraiR.; HamalP. K. Comparison of Fentanyl-Propofol and Ketamine-Propofol Combination in Induction and Maintenance with Intravenous Anesthesia for Short Surgical Procedures at Moderate Elevations. Journal of Nepal Health Research Council, v. 18, n. 4, p. 769-775, 22 Jan. 2021.