R. . Butt, U. I. Butt, W. H. Khan, F. Yasin, A. Klasra, and A. Wadood, “Early migration of biliary stent leading to free intra-peritoneal duodenal perforation- A Case Report”, J Pak Med Assoc, vol. 72, no. 12, pp. 2555–2558, Nov. 2022.