Listar Medicina, ciencias biomédicas y salud pública por autor "Teuchmann, Sibylle"
Mostrando ítems 1-3 de 3
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Antibodies to Helicobacter pylori and pepsinogen levels in children from Costa Rica: comparison of two areas with different risks for stomach cáncer
Sierra Ramos, Rafaela; Muñoz Calero, Nubia; Peña, Salvador; Biemond, I.; van Duijn, W.; Lamers, C. B. H. W.; Teuchmann, Sibylle; Hernández, S.; Correa, P. (1992-09)In children and adolescents from two areas of Costa Rica with contrasting gastric cancer risks, two factors suspected to be linked to the natural history of the disease were tested: serum antibodies to Helicobacter pylori ... -
Exposure to N-nitrosamines and other risk factors for gastric cancer in Costa Rican children
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 (1991-04-01)The hypothesis that endogenous chemical nitrosation in the normal stomach in early life could play a crucial role in inducing chronic atrophic gastritis/intestinal metaplasia in later life was tested by applying the ... -
In vivo Nitrosoproline formation and other risk factors in Costa Rican Children from high-and low-risk areas for gastric cancer
Sierra Ramos, Rafaela; Chinnock Mc'Neil, Anne Eliza; Ohshima, Hiroshi; Pignatelli, Brigitte; Malaveille, Christian; Gamboa, C.; Teuchmann, Sibylle; Muñoz Calero, Nubia; Bartsch, Helmut (1993)The hypothesis that intragastric synthesis of N-nitroso compounds (NOC) in early life could play a role in gastric carcinogenesis was tested by applying the N-nitrosoproline (NPRO) test to about 50 children living in high- ...