title: Is the cost of preservative-free opioids for intraspinal use justified?
authors.forename: J A
authors.initials: JA
authors.lastname: Aldrete
authors.forename: S L
authors.initials: SL
authors.lastname: Giles
mesh_terms: D015360:Analgesia, Epidural / Q000191:economics*; D000701:Analgesics, Opioid / Q000191:economics*; D016527:Drug Costs; D006801:Humans; D011310:Preservatives, Pharmaceutical
chemical_list: D000701:Analgesics, Opioid; D011310:Preservatives, Pharmaceutical