Khan BI, Waris H, Amir A, Nazir A, Khan A, Ali Q. Frequency of Helicobacter pylori (H. pylori) in Patients Operated for Duodenal Ulcer Perforation. Biol Clin Sci Res J [Internet]. 2025Aug.31 [cited 2026Mar.22];6(8):121-4. Available from: https://www.bcsrj.com/ojs/index.php/bcsrj/article/view/2186