title: Etiology of pain and altered consciousness following epidural injection of morphine.
authors.forename: R V
authors.initials: RV
authors.lastname: Oden
mesh_terms: D000767:Anesthesia, Epidural / Q000009:adverse effects* / Q000295:instrumentation; D003243:Consciousness / Q000187:drug effects*; D006801:Humans; D009020:Morphine / Q000009:adverse effects*; D010146:Pain / Q000209:etiology*; D011310:Preservatives, Pharmaceutical / Q000009:adverse effects
chemical_list: D011310:Preservatives, Pharmaceutical; D009020:Morphine