NASUTION, I. P. A.; RUSLIE, R. H. The Difference in Serum Pepsinogen I, Pepsinogen II, Carcinoembryonic Antigen, and Carcinoma Antigen 72-4 Levels between Children with and without Helicobacter Pylori Infection. Open Access Macedonian Journal of Medical Sciences, [S. l.], v. 10, n. B, p. 1029–1032, 2022. DOI: 10.3889/oamjms.2022.9577. Disponível em: https://oamjms.eu/index.php/mjms/article/view/9577. Acesso em: 2 may. 2024.