title: Placebos, antacids and cimetidine for duodenal ulcer.
mesh_terms: D000863:Antacids / Q000008:administration & dosage / Q000627:therapeutic use*; D002927:Cimetidine / Q000008:administration & dosage / Q000627:therapeutic use*; D004341:Drug Evaluation; D004381:Duodenal Ulcer / Q000188:drug therapy*; D006146:Guanidines / Q000627:therapeutic use*; D006801:Humans; D010919:Placebos; D012008:Recurrence; D013997:Time Factors; D014481:United States
chemical_list: D000863:Antacids; D006146:Guanidines; D010919:Placebos; D002927:Cimetidine