ETHER analgesia.
D000698:Analgesia; D000758:Anesthesia; D000769:Anesthesia, Inhalation / Q000295:instrumentation*; D000776:Anesthesiology; D004986:Ether; D006801:Humans; D059408:Pain Management
D004986:Ether
ANESTHESIA, INHALATION/apparatus and instruments