title: Erem versus IV PCA meta-analysis.
authors.forename: Robert H
authors.initials: RH
authors.lastname: Blackshear
mesh_terms: D000368:Aged; D016058:Analgesia, Patient-Controlled / Q000379:methods*; D000701:Analgesics, Opioid / Q000008:administration & dosage*; D003692:Delayed-Action Preparations; D006801:Humans; D007268:Injections, Epidural; D015201:Meta-Analysis as Topic; D009020:Morphine / Q000008:administration & dosage*
chemical_list: D000701:Analgesics, Opioid; D003692:Delayed-Action Preparations; D009020:Morphine