Shakya, S., Vaidya, P., & Paudel, B. (2022). Comparative Study of Opioid Free versus Opioid Anaesthesia in Patients Undergoing Laparoscopic Cholecystectomy. Journal of Nepalgunj Medical College, 20(2), 14–18. https://doi.org/10.3126/jngmc.v20i2.51833