Serum Pepsinogen Levels, Helicobacter pylori CagA Status, and Cytokine Gene Polymorphisms Associated with Gastric Premalignant Lesions in Costa Rica by CON, Sergio A, CON-WONG, Reinaldo, ARAKI, Keijiro, SUGIURA, Tetsuro, CON-CHIN, Gil R, CON-CHIN, Vicky G, TAKEUCHI, Hiroaki, VALERIN, Ana L, ECHANDI, Guillermo, MENA, Fernando, BRENES, Femando, YASUDA, Nobufumi

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Helicobacter pylori CagA status associated with gastric cancer incidence rate variability in Costa Rican regions by Con, Sergio A, Valerín, Ana L, Takeuchi, Hiroaki, Con-Wong, Reinaldo, Con-Chin, Vicky G, Con-Chin, Gil R, Yagi-Chaves, Sachiko N, Mena, Fernando, Brenes Pino, Fernando, Echandi, Guillermo, Kobayashi, Michiya, Monge-Izaguirre, Mario, Nishioka, Mitsuaki, Morimoto, Norihito, Sugiura, Tetsuro, Araki, Keijiro

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