title: Failure to confirm evidence for existence of two populations with duodenal ulcer.
mesh_terms: D001835:Body Weight; D004381:Duodenal Ulcer / Q000145:classification* / Q000235:genetics / Q000503:physiopathology; D005260:Female; D005750:Gastric Juice / Q000187:drug effects; D006801:Humans; D008297:Male; D010418:Pentagastrin; D013997:Time Factors
chemical_list: D010418:Pentagastrin