UNE, C.; MALESPÍN BENDAÑA, W.; RAMÍREZ-MAYORGA, V.; ROSERO BIXBY, L.; SIERRA RAMOS, R. Helicobacter pylori infection and serum pepsinogen concentrations in an elderly population representative of Costa Rica. Población y Salud en Mesoamérica, [S. l.], v. 19, n. 2, 2022. DOI: 10.15517/psm.v19i2.49405. Disponível em: https://revistas.ucr.ac.cr/index.php/psm/article/view/49405. Acesso em: 19 apr. 2024.