title: The evolution of combined spinal-epidural anesthesia needles.
authors.forename: J
authors.initials: J
authors.lastname: Eldor
mesh_terms: D000767:Anesthesia, Epidural / Q000266:history*; D000775:Anesthesia, Spinal / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D009339:Needles; D014481:United States