Unar, Sanam, Ahmed Danish, Amjad Bhurt, and Abdul Laghari. “Outcome of Duodenal Ulcer Perforation After Graham Omental Patch Repair”. Annals of Punjab Medical College (APMC) 13, no. 1 (July 9, 2018): 14-17. Accessed August 11, 2022. https://apmcfmu.com/index.php/apmc/article/view/37.