title: Long-term treatment with cimetidine in duodenal ulceration.
mesh_terms: D002986:Clinical Trials as Topic; D004341:Drug Evaluation; D004381:Duodenal Ulcer / Q000188:drug therapy*; D005500:Follow-Up Studies; D006635:Histamine H2 Antagonists / Q000008:administration & dosage* / Q000627:therapeutic use; D006801:Humans; D010919:Placebos; D012008:Recurrence; D013997:Time Factors
chemical_list: D006635:Histamine H2 Antagonists; D010919:Placebos