title: Epidural opioid requirements.
authors.forename: O A
authors.initials: OA
authors.lastname: de Leon-Casasola
authors.forename: M J
authors.initials: MJ
authors.lastname: Lema
mesh_terms: D015360:Analgesia, Epidural / Q000295:instrumentation*; D006801:Humans; D004091:Hydromorphone / Q000008:administration & dosage*; D007260:Infusion Pumps
chemical_list: D004091:Hydromorphone