Jørgensen, Vivien
Slettahjell, Hanne Bjørg
Skavberg Roaldsen, Kirsti
Kostovski, Emil http://orcid.org/0000-0002-7037-1363
Article History
Received: 13 February 2019
Revised: 29 May 2019
Accepted: 15 June 2019
First Online: 15 July 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: We certify that all applicable institutional and governmental regulations concerning the ethical use of human volunteers were followed during the course of this research. This study was approved by the Norwegian Regional Committee for Medical and Health Research Ethics South East (Approval No. 2012/531). The project was carried out in accordance with The Declaration of Helsinki—ethical principles for medical research involving human subjects.
: All participants provided their written consent prior to inclusion in the study.