[Ulcerous disease and gastritis at the time of Helicobacter pylori].
D005756:Gastritis / Q000209:etiology*; D016481:Helicobacter Infections / Q000175:diagnosis / Q000628:therapy; D016480:Helicobacter pylori; D006801:Humans; D010437:Peptic Ulcer / Q000209:etiology* / Q000628:therapy