title: Maximal acid output and the duration of symptoms before surgery in chronic duodenal ulceration.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002908:Chronic Disease; D004381:Duodenal Ulcer / Q000378:metabolism / Q000601:surgery*; D005006:Ethnicity; D005260:Female; D005750:Gastric Juice / Q000378:metabolism*; D006632:Histamine; D006801:Humans; D008297:Male; D008875:Middle Aged; D010418:Pentagastrin; D012636:Secretory Rate; D012737:Sex Factors; D013019:South Africa; D013997:Time Factors
chemical_list: D006632:Histamine; D010418:Pentagastrin