Early days of spinal anesthesia in obstetrics in Maryland.
D000758:Anesthesia; D000773:Anesthesia, Obstetrical / Q000266:history*; D000775:Anesthesia, Spinal; D000776:Anesthesiology; D005260:Female; D006801:Humans; D008396:Maryland; D009774:Obstetrics; D011247:Pregnancy
ANESTHESIA, OBSTETRICAL/history