Aditya Prakash, Hirday Kumar and Pankaj Kumar (2021) “Intraperitoneal bupivacaine alone or with dexmedetomidine or tramadol or fentanyl for post operative analgesia following laparoscopic cholecystectomy: A comparative evaluation”, International Journal of Health and Clinical Research, 4(16), pp. 43–47. Available at: https://ijhcr.com/index.php/ijhcr/article/view/2589 (Accessed: 14December2025).