R, M. F., Harahap, M. W. and Baderu, H. (2026) “Systematic Review: The Effect of Preemptive Ketamine Administration on Post-Surgical Neutrophil to Lymphocyte Ratio And Interleukin-6 (Il-6) Levels”, Journal La Medihealtico, 7(4), pp. 936-954. doi: 10.37899/journallamedihealtico.v7i4.5985.