Aas, Sigve Nyvik http://orcid.org/0000-0003-1196-0632
Seynnes, Olivier
Benestad, Haakon B.
Raastad, Truls
Article History
Received: 26 March 2019
Accepted: 28 May 2019
First Online: 10 June 2019
Compliance with ethical standards
:
: The authors declare that there is no conflict of interest regarding the publication of this article.
: All procedures were in accordance with the ethical standards of the national research committee (Regional Committee for Medical and Health Research Ethics, Section C, South East Norway) and the 1964 Helsinki declaration and its later amendments.
: Informed consent was obtained from all individual participants included in the study.