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Background
The purpose of the study was to assess the prevalence of Helicobacter pylori infection among the junior high school students in city Grudziądz, Poland.
Materials and methods
A prospective cross‐sectional study among second junior high school students was conducted from September 2008 to June 2015 during seven consecutive school years. The studied group was 3241 students 13‐17 years old...
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