Therapy of chronic non-malignant pain with opioids.
Clark
Alexander J
AJ
Lynch
Mary E
ME
D000701:Analgesics, Opioid / Q000627:therapeutic use*; D006801:Humans; D008691:Methadone / Q000627:therapeutic use; D008875:Middle Aged; D010146:Pain / Q000188:drug therapy*; D014147:Tramadol / Q000627:therapeutic use
D000701:Analgesics, Opioid; D014147:Tramadol; D008691:Methadone