“To Assess the Frequency of Iron Deficiency Anemia and Helicobacter Pylori Infection Among School-Age Children with Chronic Gastroduodenal Pathology” (2023) European Science Methodical Journal, 1(8), pp. 10–18. Available at: https://europeanscience.org/index.php/3/article/view/296 (Accessed: 11 September 2025).