Muneeb, M. D. and Naushad Baig, M. A. (2019) “Postoperative Pain after Gallbladder Retrieval from Umbilical and Epigastric Ports in Laparoscopic Cholecystectomy: A Randomized Controlled Trial”, Journal of the Dow University of Health Sciences (JDUHS), 13(3), pp. 138–142. doi: 10.36570/jduhs.2019.3.694.