Assesment of Postoperative Analgesic Effects of Intramuscular Tramadol Administration and Intraperitoneal Bupivacaine following Laparoscopic Cholecystectomy. PMJUA [Internet]. 2023 Oct. 4 [cited 2026 Jul. 10];8(1-2):23-30. Available from: https://painmedicine.org.ua/index.php/pnmdcn/article/view/347