Obstetrical anesthesia with ethyl vinyl ether and oxygen.
D000698:Analgesia; D000758:Anesthesia; D000760:Anesthesia and Analgesia; D000773:Anesthesia, Obstetrical; D004986:Ether; D004987:Ethers; D005019:Ethyl Ethers; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D010100:Oxygen; D011247:Pregnancy
D004987:Ethers; D005019:Ethyl Ethers; D004986:Ether; C013333:ethyl vinyl ether; D010100:Oxygen
ETHERS/anesthesia and analgesia; LABOR/anesthesia and analgesia