Urstad, Kristin Hjorthaug
Wahl, Astrid Klopstad
Moum, Torbjørn
Engebretsen, Eivind
Andersen, Marit Helen
Article History
Received: 30 March 2021
Accepted: 30 June 2021
First Online: 15 July 2021
Declarations
:
: The project was ethical reviewed and approved by the Data Protection Office at Oslo University Hospital, where the study was undertaken (approval number: 2014/5573). The Data Protection Office at Oslo University Hospital is according to Norwegian law legally responsible for the ethical approval of this study and for handling of the data in the project.The study protocol was initially sent to the Ethical Regional Committee (REK) which is the main authority in Norway that grants preapproval of medical and health research projects. REK considered the project to be a quality control study and outside the remit of the Act on Medical and Health Research (ref number: 2014/447).The study was performed in accordance with the Declaration of Helsinki. Written informed consent was obtained from each participant prior to study procedures.
: Not relevant.
: No competing interests.