Comparison of the Mean Duration of Analgesia of Intraperitoneal Bupivacaine and Ropivacaine Versus Placebo After Laparoscopic Cholecystectomy. mfm [Internet]. 2024 Apr. 30 [cited 2026 Jan. 31];35(4). Available from: https://medicalforummonthly.com/index.php/mfm/article/view/4364