title: Postmarketing surveillance and the examination of the long-term safety of antiulcer drugs.
authors: Queen Elizabeth Hospital, Department of Medicine, Edgbaston, Birmingham, UK.
authors: M J
authors: MJ
authors: Langman
mesh_terms: D000897:Anti-Ulcer Agents / Q000627:therapeutic use*; D002927:Cimetidine / Q000627:therapeutic use; D006801:Humans; D011358:Product Surveillance, Postmarketing; D011899:Ranitidine / Q000627:therapeutic use; D013997:Time Factors
chemical_list: D000897:Anti-Ulcer Agents; D002927:Cimetidine; D011899:Ranitidine