Carl Koller and the discovery of local anesthesia.
D000766:Anesthesia, Dental / Q000266:history; D000772:Anesthesia, Local / Q000266:history*; D000776:Anesthesiology / Q000266:history; D005858:Germany; D049672:History, 19th Century; D049673:History, 20th Century; D014481:United States