Funding for this research was provided by:
Aase og Ejnar Danielsens Fond
Text and Data Mining valid from 2018-12-01
Received: 21 December 2017
Accepted: 26 November 2018
First Online: 14 December 2018
: KSA is MD from 2014, and has performed this study under close supervision of ADK while employed at the Department of Otorhinolaryngology, OUH. The present study is a follow-up of ADKs ph.d. study.
: The project was approved by the Danish data protection agency and the Danish health authorities. The participants were not contacted.
: The authors declare that they have no competing interests.
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