Lindberg, Eva
Moller, Claes
Kere, Juha
Wedenoja, Satu
Anderzén-Carlsson, Agneta
Article History
Received: 4 December 2019
Accepted: 7 April 2020
First Online: 15 April 2020
Ethics approval and consent to participate
: The study protocol was submitted to and approved by the Regional Ethical Review Board in Uppsala, Sweden (Reference number: 2014/079) and the parents gave their written informed consent. Written permission was obtained from the heads of the Departments of Pediatrics and Audiology to access the data used in this study. Thereafter, medical charts of the cases were obtained from these departments and were reviewed in detail.
: The parents gave their written informed consent for publication.
: The authors declare that they have no competing interests.