title: The epidemiology and pathogenesis of chronic gastritis: three etiologic entites.
mesh_terms: D000328:Adult; D000752:Anemia, Pernicious / Q000150:complications; D001327:Autoimmune Diseases / Q000209:etiology; D002908:Chronic Disease; D004032:Diet / Q000009:adverse effects; D004381:Duodenal Ulcer / Q000503:physiopathology; D005750:Gastric Juice / Q000378:metabolism; D005756:Gastritis / Q000209:etiology*; D006801:Humans