Yang, J C The role of gastric acid and Helicobacter pylori in the natural course of duodenal ulcer. [electronic resource] - Journal of microbiology, immunology, and infection = Wei mian yu gan ran za zhi Sep 1999 - 155-62 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial ISSN: 1684-1182 Subjects--Topical Terms: AdolescentAdultAgedAluminum Hydroxide--therapeutic useDrug CombinationsDuodenal Ulcer--drug therapyFemaleGastric Acid--physiologyHelicobacter pylori--drug effectsHumansMagnesium Hydroxide--therapeutic useMaleMiddle AgedPiperidines--therapeutic useProspective StudiesRecurrenceSimethicone--therapeutic use