Schwab, Burkard http://orcid.org/0000-0002-6013-7952
Wimmer, Wilhelm http://orcid.org/0000-0001-5392-2074
Severens, Johan L. http://orcid.org/0000-0001-9590-0244
Caversaccio, Marco D. http://orcid.org/0000-0002-7090-8087
Article History
Received: 25 June 2019
Accepted: 7 November 2019
First Online: 20 November 2019
Compliance with ethical standards
:
: The authors declare a potential conflict of interest given that literature search, screening, and data extraction were performed by the Clinical Research Department of one manufacturer (MED-EL, Austria). All steps of this literature review followed Cochrane guidelines and are reported in a transparent way. Raw data are provided as Electronic Supplementary Material (Online Resources). The following authors have received funding from manufacturers mentioned in this review: BS was supported by MED-EL and Cochlear. MC and WW, with the Department of ORL, Head and Neck Surgery and the Artorgcenter, University Bern were supported by MED-EL, Cochlear and Oticon Medical. JS has not received any kind of support from any of the manufacturers mentioned in this review.