Spinal opioids.
McHutchon
A
A
D000775:Anesthesia, Spinal; D018686:Anesthetics, Intravenous; D004349:Drug Packaging; D005283:Fentanyl; D006801:Humans; D013242:Sterilization
D018686:Anesthetics, Intravenous; D005283:Fentanyl