Archiv für OhrenheilkundeAugust 1906, Volume 69, Issue 1–2, pp 149–160 | Cite asWissenschaftliche RundschauArticle 16 Downloads This is a preview of subscription content, log in to check access.PreviewUnable to display preview. Download preview PDF.Unable to display preview. Download preview PDF.Copyright information© Verlag Von F. C. W. Vogel 1906