Molina-Castro, G., Matarrita-Muñoz, S., Molina-Castro, S.E., Méndez-Chacón, E., Une, C. and Ramírez-Mayorga, V. 2021. Exploratory multigroup structural equation modeling approach to analyzing H. pylori infection, serological pepsinogen levels, and life style factors in an elderly population in Costa Rica. Población y Salud en Mesoamérica. 19, 2 (Dec. 2021). DOI:https://doi.org/10.15517/psm.v19i2.48113.