Epidural opiates and degenerative back pain.
D000328:Adult; D000368:Aged; D001416:Back Pain / Q000188:drug therapy* / Q000209:etiology; D004824:Epidural Space; D005260:Female; D006801:Humans; D007267:Injections; D008297:Male; D008875:Middle Aged; D009294:Narcotics / Q000008:administration & dosage*; D010148:Intractable Pain / Q000188:drug therapy*; D013122:Spinal Diseases / Q000150:complications
D009294:Narcotics