Text and Data Mining valid from 2018-09-14
Received: 8 September 2017
Accepted: 30 August 2018
First Online: 14 September 2018
Ethics approval and consent to participate
: Data were analysed and stored in the research server at the Western Norway University of Applied Sciences. The Norwegian Social Science Data Services (NSD) approved the study (Reference number 42653). The survey was voluntary, and consent for participation was completion and return of the questionnaire. We treated the data confidentially.
: Not applicable.
: The authors declare that they have no competing interests.
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