Hans Andersen and James Young Simpson.
D000769:Anesthesia, Inhalation / Q000266:history*; D000776:Anesthesiology / Q000266:history*; D002725:Chloroform / Q000266:history; D003718:Denmark; D005019:Ethyl Ethers / Q000266:history; D005197:Famous Persons; D049672:History, 19th Century; D008093:Literature, Modern; D012606:Scotland
D005019:Ethyl Ethers; D002725:Chloroform