title: The World Health Organization three-step analgesic ladder comes of age.
authors.forename: Colette
authors.initials: C
authors.lastname: Reid
authors.forename: Andrew
authors.initials: A
authors.lastname: Davies
mesh_terms: D000700:Analgesics / Q000627:therapeutic use*; D003663:Decision Trees; D006801:Humans; D009369:Neoplasms; D010146:Pain / Q000517:prevention & control*; D014944:World Health Organization
chemical_list: D000700:Analgesics