Composition and Gene Expression of the cag Pathogenicity Island in Helicobacter pylori Strains Isolated from Gastric Carcinoma and Gastritis Patients in Costa Rica

by Occhialini, Alessandra, Marais, Armelle, Urdaci, María, Sierra Ramos, Rafaela, Muñoz Calero, Nubia, Covacci, Antonello, Mégraud, Francis
Published 2015

In vivo Nitrosoproline formation and other risk factors in Costa Rican Children from high-and low-risk areas for gastric cancer

by Sierra Ramos, Rafaela, Chinnock Mc'Neil, Anne Eliza, Ohshima, Hiroshi, Pignatelli, Brigitte, Malaveille, Christian, Gamboa, C., Teuchmann, Sibylle, Muñoz Calero, Nubia, Bartsch, Helmut
Published 2015

Helicobater pylori. ¿Es posible la erradicación?

by Sierra Ramos, Rafaela, Muñoz Calero, Nubia, Sanabria, Marjorie, Mora Zuñiga, Francisco, Quirós, Eber, Brenes Pino, Fernando, Campos Rudín, Manuel, Mora, Walter, Altman Ortiz, Rodrigo
Published 2015

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

Exposure to N-nitrosamines and other risk factors for gastric cancer in Costa Rican children

by Sierra Ramos, Rafaela, Ohshima, Hiroshi, Muñoz Calero, Nubia, Teuchmann, Sibylle, Peña, Salvador, Malaveille, Christian, Pignatelli, Brigitte, Chinnock Mc'Neil, Anne Eliza, El Ghissassi, F., Chen, C., Hautefeuille, A., Gamboa Cerda, Cecilia, Bartsch, Helmut
Published 2016

Erradicación de Helicobacter pylori en una población de alto riesgo de cáncer gástrico

by Sierra Ramos, Rafaela, Salas Chaves, Pilar, Mora Zuñiga, Francisco, Sanabria, Marjorie, Chinnock Mc'Neil, Anne Eliza, Peña, Salvador, Quirós, Eber, Mora, Walter, Mena, Fernando, Altman Ortiz, Rodrigo, Muñoz Calero, Nubia
Published 2015