title: A dual technique for identification of the epidural space.
authors.forename: R J
authors.initials: RJ
authors.lastname: Baylis
authors.forename: J E
authors.initials: JE
authors.lastname: Cropp
mesh_terms: D000388:Air; D000776:Anesthesiology / Q000193:education*; D004503:Education, Medical, Graduate / Q000379:methods*; D004824:Epidural Space; D006801:Humans; D007268:Injections, Epidural / Q000379:methods*; D012965:Sodium Chloride
chemical_list: D012965:Sodium Chloride