Solvang, Håkon With
Nordheggen, Robin Andre https://orcid.org/0000-0003-0073-6942
Clementsen, Ståle
Hammer, Ola-Lars
Randsborg, Per-Henrik
Article History
Received: 16 May 2018
Accepted: 2 August 2018
First Online: 13 August 2018
Ethics approval and consent to participate
: The study was conducted according to the Declaration of Helsinki and approved by the Regional Ethics Committee of Eastern Norway (ref. 2009/1517) and the local data protection officer. The participants consented to participate.
: Not applicable.
: The authors declare that they have no competing interests.
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