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R. Glanczpigel
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[Seroprevalence of helicobacter pylori infection in the republic of Argentina: influence of age, sex, socioeconomic level, geographical area, and health infrastructure. Multicenter study by the Club Argentino del Estomago y Duodeno].
A. Varela, R. Pedrana, R. Corti, 1999, Acta gastroenterologica Latinoamericana.