UMEGBOLU, E. I. Peptic ulcer disease in school children aged 2-11 years in Southeast Nigeria. International Journal of Research in Medical Sciences, [S. l.], v. 10, n. 5, p. 1007–1011, 2022. DOI: 10.18203/2320-6012.ijrms20221169. Disponível em: https://www.msjonline.org/index.php/ijrms/article/view/10640. Acesso em: 14 oct. 2025.