title: Identification of epidural space using air and normal saline.
authors: P
authors: P
authors: Goodyear
mesh_terms: D000388:Air; D000767:Anesthesia, Epidural / Q000379:methods*; D004824:Epidural Space; D006801:Humans; D012965:Sodium Chloride; D013594:Syringes
chemical_list: D012965:Sodium Chloride