“Characteristics of CagA, VacA Virulence Factors of Helicobacter Pylori and CYP2C19 Enzyme Polymorphism in Patients With H.Pylori - Induced Peptic Ulcer Disease Who Have Not Been Treated”. Tạp Chí Y dược học Phạm Ngọc Thạch, vol. 3, no. 4, Oct. 2026, https://bsgdtphcm.vn/ojs/index.php/pnt/article/view/408.