Fredriksen, Helge http://orcid.org/0000-0002-3974-9583
Funding for this research was provided by:
University of Agder
Article History
Received: 11 February 2019
Accepted: 8 January 2020
First Online: 1 February 2020
Change Date: 15 February 2020
Change Type: Correction
Change Details: In page 7, 2nd paragraph, line 1: the link <ExternalRef><RefSource>https://www.youtube.com/watch?v=xNkBXAnRCPs</RefSource><RefTarget Address="https://www.youtube.com/watch?v=xNkBXAnRCPs" TargetType="URL"/></ExternalRef>.