title: Long-term treatment of duodenal ulcer with ranitidine: an endoscopic, biochemical and clinical trial.
mesh_terms: D002986:Clinical Trials as Topic; D004381:Duodenal Ulcer / Q000097:blood / Q000188:drug therapy*; D004724:Endoscopy; D006801:Humans; D011899:Ranitidine / Q000008:administration & dosage / Q000627:therapeutic use*
chemical_list: D011899:Ranitidine