[The early days of ether anesthesia].
D000758:Anesthesia / Q000266:history*; D005019:Ethyl Ethers / Q000266:history*; D049672:History, 19th Century; D013030:Spain; D006113:United Kingdom; D014481:United States
D005019:Ethyl Ethers
Los primeros días de la anestesia etérea.