title: Negative extradural pressure may not be caused by tenting of the dura.
authors.forename: E
authors.initials: E
authors.lastname: Abouleish
mesh_terms: D000767:Anesthesia, Epidural; D000775:Anesthesia, Spinal; D004388:Dura Mater / Q000502:physiology*; D006801:Humans; D011312:Pressure