Dr. Misra Jasmeen and Dr. A. SaiSiri (2025) “Precision Anesthesia: Nalbuphine-Levobupivacaine vs. Fentanyl-Levobupivacaine in Spinal Blocks”, Medico Research Chronicles, 12(2), pp. 207-222. doi: 10.26838/MEDRECH.2025.12.2.778.