title: [Determination of the effects of anti-ulcer agents by double-blind test based on the shrinkage rate of the x-ray niche: clinical evaluation of Pirecin, an anti-ulcer agent].
mesh_terms: D000328:Adult; D000368:Aged; D002986:Clinical Trials as Topic; D005069:Evaluation Studies as Topic; D006801:Humans; D008875:Middle Aged; D010069:Oxadiazoles / Q000009:adverse effects / Q000627:therapeutic use*; D010437:Peptic Ulcer / Q000000981:diagnostic imaging / Q000188:drug therapy*; D010919:Placebos; D011859:Radiography; D013270:Stomach / Q000000981:diagnostic imaging
chemical_list: D010069:Oxadiazoles; D010919:Placebos