[Sacral epidural anesthetic block in operative obstetrics. (Clinical contribution)].
D000758:Anesthesia; D000765:Anesthesia, Conduction; D000773:Anesthesia, Obstetrical; D000777:Anesthetics; D006801:Humans; D009774:Obstetrics
D000777:Anesthetics
ANESTHESIA, CONDUCTION; ANESTHESIA, OBSTETRICAL