A concept of the etiology of gastric and duodenal ulcers.
D004063:Digestion; D004381:Duodenal Ulcer; D005750:Gastric Juice / Q000502:physiology*; D006801:Humans; D010437:Peptic Ulcer / Q000209:etiology*
GASTRIC JUICE/physiology; PEPTIC ULCER/etiology and pathogenesis