The introduction of chloroform anesthesia in the United States.
D000766:Anesthesia, Dental / Q000266:history*; D000769:Anesthesia, Inhalation / Q000266:history*; D001900:Boston; D002725:Chloroform / Q000266:history* / Q000302:isolation & purification; D049672:History, 19th Century; D008396:Maryland; D012606:Scotland; D014481:United States
D002725:Chloroform