Funding for this research was provided by:
The Finnish Society of Ear Surgery
University of Turku (UTU) including Turku University Central Hospital
Article History
Received: 31 January 2022
Accepted: 14 March 2022
First Online: 6 April 2022
Declarations
:
: The authors have no other relevant financial or non-financial interests to disclose.
: The Ethics committee of the Hospital District of Helsinki and Uusimaa approved the study (ยง68/HUS/356/2017).