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https://zedie.wordpress.com/2018/12/14/gastritis-staging-in-the-endoscopic-follow-up-for-the-secondary-prevention-of-gastric-cancer-a-5-year-prospective-study-of-1755-patients/
Gastritis staging in the endoscopic follow-up for the secondary prevention of gastric cancer: a 5-year prospective study of 1755 patients