Instituto Tecnológico de Costa Rica;
Research & Chemical and Microbiology Services Center-CEQIATEC;
Cartago;
Costa Rica;
Instituto Tecnológico de Costa Rica;
Biotechnology Research Center;
Cartago;
Costa Rica;
Doctorate in Natural Sciences for Development;
DOCINADE;
Cartago;
Costa Rica;
Helicobacter; pylori; Cancer; Gastric; Drinking; Water; glmM; Marker;