title: Similar pain in different countries.
authors.forename: S
authors.initials: S
authors.lastname: Mercadante
mesh_terms: D000701:Analgesics, Opioid / Q000008:administration & dosage*; D004305:Dose-Response Relationship, Drug; D005060:Europe; D006801:Humans; D009369:Neoplasms / Q000150:complications*; D009656:North America; D010146:Pain / Q000188:drug therapy* / Q000209:etiology
chemical_list: D000701:Analgesics, Opioid