Rajan Babu P.K. (2020) “Evaluation of Post-operative Analgesic effect of Intraperitoneal Ropivacaine with or without Tramadol in Laparoscopic Cholecystectomy”, Academia Anesthesiologica International, 4(2), pp. 362-365. Available at: https://www.aijournals.com/index.php/aan/article/view/2130 (Accessed: 28April2026).