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H. pylori infection rates and upper gastrointestinal diseases (UGIDs) from 2003 to 2012. a Disease prevalence (%) of UGIDS (CG chronic gastritis, DU duodenal ulcer, GU gastric ulcer, GC gastric cancer) between 2003 and 2012. b H. pylori infection rates (%) in UGIDs between 2003 and 2012. c H. pylori infection rates (%) in both positive and negative groups of RE (reflux esophagitis) between 2003 and 2012 are shown
