title: The timing of opioid administration in postdural puncture headache.
authors.forename: J
authors.initials: J
authors.lastname: Eldor
mesh_terms: D000767:Anesthesia, Epidural / Q000009:adverse effects*; D005283:Fentanyl / Q000008:administration & dosage / Q000627:therapeutic use*; D006261:Headache / Q000188:drug therapy* / Q000209:etiology; D006801:Humans; D013997:Time Factors
chemical_list: D005283:Fentanyl