title: A precise method of cannulating the lumbar epidural space.
mesh_terms: D000767:Anesthesia, Epidural / Q000295:instrumentation*; D000773:Anesthesia, Obstetrical; D002404:Catheterization / Q000295:instrumentation*; D005260:Female; D006801:Humans; D008722:Methods; D009339:Needles; D011247:Pregnancy