Text and Data Mining valid from 2019-04-03
First Online: 3 April 2019
Compliance with ethical guidelines
: U. Hoppe works for a cochlear implant company (Cochlear Deutschland GmbH & Co. KG). The study was supported by Cochlear Research and Development Ltd. T. Hocke, A. Hast, and H. Iro declare that they have no competing interests.
: All procedures performed in studies involving human participants or on human tissue were in accordance with the ethical standards of the institutional and/or national research committee and with the 1975 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants included in the study.
: The supplement containing this article is not sponsored by industry.