title: [Etiological factors of duodenal ulcer].
mesh_terms: D000428:Alcohol Drinking; D064420:Drug-Related Side Effects and Adverse Reactions; D004381:Duodenal Ulcer / Q000209:etiology*; D005247:Feeding Behavior; D005744:Gastric Acid / Q000378:metabolism; D006801:Humans; D011602:Psychophysiologic Disorders / Q000209:etiology; D012907:Smoking
vernacular_title: Arsaksfaktorer ved ulcus duodeni.