title: Morphine and chronic cancer pain.
authors.forename: B J
authors.initials: BJ
authors.lastname: Smit
mesh_terms: D006801:Humans; D009020:Morphine / Q000627:therapeutic use*; D009369:Neoplasms / Q000503:physiopathology*; D010146:Pain / Q000188:drug therapy*
chemical_list: D009020:Morphine