Histological changes in the gastric and duodenal mucosa in children with recurrent abdominal pain treated at the Hospital Militar Escuela “Dr. Alejandro Dávila Bolaños”, 2017. RCSEM [Internet]. 2022 Jan. 25 [cited 2025 Aug. 12];3(3):2-8. Available from: https://revistas.unan.edu.ni/index.php/Salud/article/view/3733