title: Omeprazole versus ranitidine in erosive oesophagitis.
mesh_terms: D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D004942:Esophagitis, Peptic / Q000188:drug therapy*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009853:Omeprazole / Q000627:therapeutic use*; D011897:Random Allocation; D011899:Ranitidine / Q000627:therapeutic use*
chemical_list: D011899:Ranitidine; D009853:Omeprazole