title: Omeprazole versus ranitidine in the treatment of resistant duodenal ulcer.
authors.forename: Z
authors.initials: Z
authors.lastname: Tulassay
authors.forename: F
authors.initials: F
authors.lastname: Szalay
authors.forename: M
authors.initials: M
authors.lastname: Acharya
mesh_terms: D004381:Duodenal Ulcer / Q000188:drug therapy*; D006801:Humans; D009853:Omeprazole / Q000627:therapeutic use*; D011899:Ranitidine / Q000627:therapeutic use*
chemical_list: D011899:Ranitidine; D009853:Omeprazole