Fredriksen, Kristin J. http://orcid.org/0000-0002-8483-7240
Schaufel, Margrethe A.
Johannessen, Jan O.
Walby, Fredrik A.
Davidson, Larry
Schoeyen, Helle K.
Article History
First Online: 10 December 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Regional Committee for Medical Research Ethics, West Norway (approval no 2012/740) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Written informed consent was obtained from all participants, who were informed that they could withdraw from the study at any point without consequence.