Al marzooq, Tawfiq . j. Mohammad. “Diagnostic Accuracy of Different Radiological Investigations in the Diagnosis of Perforated Duodenal Ulcer”. AL-Kindy College Medical Journal 8, no. 1 (June 30, 2012): 83–87. Accessed May 6, 2024. https://jkmc.uobaghdad.edu.iq/index.php/MEDICAL/article/view/617.