Johannes Kessel and the history of endaural surgery.
D005858:Germany; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008416:Mastoid / Q000601:surgery*; D010036:Otolaryngology / Q000266:history*; D013201:Stapes Surgery / Q000266:history*; D014433:Tympanoplasty / Q000266:history*