title: Simpson and Hans Andersen.
mesh_terms: D000769:Anesthesia, Inhalation / Q000266:history*; D001319:Authorship; D003718:Denmark; D005019:Ethyl Ethers / Q000266:history*; D005197:Famous Persons; D049672:History, 19th Century; D012606:Scotland
chemical_list: D005019:Ethyl Ethers