Funding for this research was provided by:
Research Council of Norway (283520)
Received: 29 January 2021
Accepted: 28 September 2021
First Online: 8 December 2021
: This research was based on a desk-based systematic literature review and no ethics approval was required and no human subjects were involved in the research.
: The authors, DM and FZ, provide consent for publication of this paper in the journal.
: The authors have no known competing interests to disclose.