Butt AU, Sadiq I. Conversion of Laparoscopic to open cholecystectomy - six years experience at Shalamar Hospital, Lahore. Annals KEMU [Internet]. 2016 Apr. 4 [cited 2024 May 5];12(4). Available from: https://www.annalskemu.org/journal/index.php/annals/article/view/953