Maitra, Tapash Kumar, Mahmud Ekramullah, - Faruquzzaman, and Samiran Kumar Mondol. 2017. “Factors Determining Conversion of Laparoscopic to Open Cholecystectomy”. IMC Journal of Medical Science 11 (2):32-35. https://banglajol.info/index.php/IMCJMS/article/view/33091.