Kelvin, R. Zainal, Irwanto FH, and Erial Bahar, “Oxycodone 5 Miligram is More Effective Than Ketorolac 30 Miligram in Suppressing Cortisol Levels During General Anesthesia”, JACR, vol. 2, no. 1, pp. 148-158, Dec. 2021.