Funding for this research was provided by:
L. Meltzers Høyskolefond (Sak nr.2016/03/LMH/KH)
Article History
Received: 27 February 2018
Accepted: 15 June 2018
First Online: 25 July 2018
Compliance with Ethical Standards
:
: On behalf of all authors, the corresponding author states that there is no conflict of interest.