The original version of this article was published online on May 20 th 2020. On June 26 th 2020, the journal editor received complaints regarding suspected plagiarism and lacking citations in the article, which were forwarded to the publisher, Scandinavian University Press (Universitetsforlaget). In July and August, the editors systematically reviewed the article and the authors where allowed to provide their feedback on the complaint. Pending further clarification of the issue, the publisher retracted the article on August 21 st 2020. On August 28 th 2020 the editor based on information given to the editor and correspondence with those involved, regards the case as a minor form of plagiarism and the journal editorial team invited the authors to submit a revised version. On September 29 th the journal published online the revised article after it had been evaluated by the editors. The retracted version of the articles has been published here: