title: Epidural endeavour and the pressure principle.
authors: M J A
authors: MJ
authors: Wilson
mesh_terms: D015360:Analgesia, Epidural / Q000379:methods*; D000767:Anesthesia, Epidural / Q000379:methods*; D004824:Epidural Space / Q000033:anatomy & histology / Q000502:physiology*; D006801:Humans; D011312:Pressure