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Endoscopy results for all participants. Among the 600 patients who underwent upper gastrointestinal endoscopy, there were 349 patients with chronic gastritis, 185 patients with gastric erosion, 16 patients with gastric ulcer, 13 patients with duodenal ulcer, 12 patients with Barrett's esophagus, 9 patients with gastric cancer, 7 patients with esophageal cancer, and others.
