title: The Edmonton Staging System.
authors.forename: P
authors.initials: P
authors.lastname: Walker
authors.forename: S
authors.initials: S
authors.lastname: Watanabe
authors.forename: A
authors.initials: A
authors.lastname: Taube
mesh_terms: D000701:Analgesics, Opioid / Q000627:therapeutic use*; D006801:Humans; D009369:Neoplasms / Q000150:complications*; D010146:Pain / Q000145:classification / Q000188:drug therapy* / Q000209:etiology
chemical_list: D000701:Analgesics, Opioid