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Sumreen, Muhammad Daud, Sham Lal Prithiani, Sheema Khan, Nadeem Sharif, Ifrah Zafar 2024. Association of Helicobacter pylori Infection with Severity and Clinical Presentation of Gastric Ulcer: A Cross-Sectional Clinical Study. Pakistan Journal of Medical & Health Sciences. 18, 01 (Jan. 2024), 769. DOI:https://doi.org/10.53350/pjmhs02024181769.