Antibodies to Helicobacter pylori and pepsinogen levels in children from Costa Rica: comparison of two areas with different risks for stomach cáncer

by Sierra Ramos, Rafaela, Muñoz Calero, Nubia, Peña, Salvador, Biemond, I., van Duijn, W., Lamers, C. B. H. W., Teuchmann, Sibylle, Hernández, S., Correa, P.
Published 2015