title: The extradural sieve.
authors.forename: P A
authors.initials: PA
authors.lastname: Groves
authors.forename: N E
authors.initials: NE
authors.lastname: Oriol
mesh_terms: D015360:Analgesia, Epidural; D016362:Analgesia, Obstetrical / Q000379:methods*; D000075202:Contraindications; D005260:Female; D005283:Fentanyl; D005316:Fetal Distress / Q000209:etiology; D006801:Humans; D011247:Pregnancy; D014219:Trial of Labor; D014597:Uterine Rupture / Q000175:diagnosis*
chemical_list: D005283:Fentanyl