title: Pre-emptive analgesia.
authors.forename: L
authors.initials: L
authors.lastname: Edmondson
mesh_terms: D015360:Analgesia, Epidural / Q000379:methods*; D004334:Drug Administration Schedule; D006801:Humans; D009020:Morphine / Q000008:administration & dosage; D013223:Statistics as Topic
chemical_list: D009020:Morphine