Khan, Bilal Irshad, Hira Waris, Asad Amir, Amna Nazir, Atif Khan, and Qasim Ali. 2025. “Frequency of Helicobacter Pylori (H. Pylori) in Patients Operated for Duodenal Ulcer Perforation”. Biological and Clinical Sciences Research Journal 6 (8):121-24. https://doi.org/10.54112/bcsrj.v6i8.2186.