An aspect of medical publication: 1846 and 1982.
D000758:Anesthesia / Q000266:history; D001900:Boston; D004986:Ether / Q000266:history; D049672:History, 19th Century; D006801:Humans; D010506:Periodicals as Topic / Q000266:history*; D013997:Time Factors
D004986:Ether