Alaa Musa El Sayed Mohammed. “Postcholecystectomy Iatrogenic Biliary Injury Presentation, Diagnosis and Management at the National Centre of Gastroeneterology and Liver Disease - Sudan”. Global Journal of Medical Research, vol. 13, no. I4, July 2013, pp. 9-14, https://medicalresearchjournal.org/index.php/GJMR/article/view/486.