[Development and status of microscopes for surgery of the ear].
D004427:Ear Diseases / Q000601:surgery*; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008853:Microscopy / Q000266:history*; D008866:Microsurgery / Q000266:history* / Q000295:instrumentation
Entwicklung und Stand der Ohr-Operationsmikroskope.