Pain, anaesthesia, and babies.
D000758:Anesthesia / Q000379:methods*; D005283:Fentanyl; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000601:surgery*; D007235:Infant, Premature, Diseases / Q000601:surgery; D009609:Nitrous Oxide; D009619:Nociceptors / Q000502:physiology; D018570:Risk Assessment; D036302:Therapeutic Human Experimentation
D009609:Nitrous Oxide; D005283:Fentanyl