Edwin Beer (1876-1938).
D004564:Electrocoagulation / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D001749:Urinary Bladder Neoplasms / Q000266:history* / Q000601:surgery; D014572:Urology / Q000266:history*