title: Aetiology of peptic ulcer in Norway.
authors.forename: B
authors.initials: B
authors.lastname: Breuer-Katschinski
authors.forename: R F
authors.initials: RF
authors.lastname: Logan
mesh_terms: D000818:Animals; D006801:Humans; D008297:Male; D008892:Milk / Q000009:adverse effects*; D009664:Norway; D010437:Peptic Ulcer / Q000209:etiology*