title: Anticipation in duodenal ulcer--development of the disease in patients with hereditary predisposition.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D004381:Duodenal Ulcer / Q000150:complications / Q000235:genetics*; D006801:Humans; D008875:Middle Aged; D011379:Prognosis