title: What is the best medium to identify the epidural space?
authors.forename: R
authors.initials: R
authors.lastname: Gebhardt
authors.forename: O A
authors.initials: OA
authors.lastname: de Leon-Casasola
mesh_terms: D000767:Anesthesia, Epidural / Q000379:methods*; D004824:Epidural Space / Q000033:anatomy & histology*; D006801:Humans