“To Assess the Frequency of Iron Deficiency Anemia and Helicobacter Pylori Infection Among School-Age Children With Chronic Gastroduodenal Pathology”. European Science Methodical Journal 1, no. 8 (November 18, 2023): 10–18. Accessed September 11, 2025. https://europeanscience.org/index.php/3/article/view/296.