[Theory of the development of gastric and duodenum ulcers].
D004381:Duodenal Ulcer / Q000209:etiology*; D005753:Gastric Mucosa / Q000378:metabolism; D006801:Humans; D007413:Intestinal Mucosa / Q000378:metabolism; D009132:Muscles / Q000502:physiology; D013276:Stomach Ulcer / Q000209:etiology*