Hawrame, Taher Abdullah, Sirwan Hama Shareef, and Zanko Sherko Fathalla. 2010. “Predictive Factors For Conversion Of Laparoscopic Cholecystectomy To Open Procedure”. Zanco Journal of Medical Sciences (Zanco J Med Sci) 14 (1):1-8. https://doi.org/10.15218/zjms.2010.001.