R. Iqbal, Muhammad Ahmad, Muhammad Bilal, S. Begum, and M. Khalid, “Diagnostic Accuracy of Stool Antigen and Serological Tests for Helicobacter pylori Infection in Symptomatic Patients at a Tertiary Care Hospital in Islamabad”, IJBR, vol. 4, no. 2, pp. 208–215, Feb. 2026, doi: 10.70749/ijbr.v4i2.2911.