title: Letter: Hypersecretion and length of history in duodenal ulceration.
mesh_terms: D004381:Duodenal Ulcer / Q000503:physiopathology*; D005750:Gastric Juice / Q000378:metabolism*; D006801:Humans; D013270:Stomach / Q000294:innervation / Q000503:physiopathology*; D014630:Vagus Nerve / Q000503:physiopathology