Ether analgesia during major surgery.
D000698:Analgesia; D000758:Anesthesia; D000760:Anesthesia and Analgesia; D000769:Anesthesia, Inhalation; D004986:Ether; D004987:Ethers
D004987:Ethers; D004986:Ether
ANESTHESIA, INHALATION; ETHER, ETHYL/anesthesia and analgesia