Narcotic analgesics: fears and responsibilities.
D000701:Analgesics, Opioid / Q000627:therapeutic use*; D006801:Humans; D007880:Legislation, Drug; D009369:Neoplasms / Q000503:physiopathology; D010148:Intractable Pain / Q000188:drug therapy*; D014481:United States
D000701:Analgesics, Opioid