Tamrakar K, Khwaunju P, Sah K. Comparative study between 3-ports and 4-ports laparoscopic cholecystectomy for the cases of gall stone disease. J. Soc. Surg. Nepal [Internet]. 2016 Jul. 25 [cited 2024 Nov. 21];18(3):15. Available from: https://nepjol.info/index.php/JSSN/article/view/15270