Yaqub, Umairah, Sadaf Zohra, Syed Hussain, Ambreen Ehsan, Ayesha Imran, and Sohail Ilyas. “CONVERSION OF LAPAROSCOPIC CHOLECYSTECTOMY TO OPEN CHOLECYSTECTOMY: PREOPERATIVE RISK FACTORS AND INTRAOPERATIVE REASONS”. Pakistan Armed Forces Medical Journal 70, no. 5 (October 30, 2020): 1288-93. Accessed January 27, 2023. https://mail.pafmj.org/index.php/PAFMJ/article/view/5551.