Funding for this research was provided by:
Received: 5 February 2020
Accepted: 16 September 2020
First Online: 21 September 2020
Ethics approval and consent to participate
: The study was approved by the data protection authority at Oslo University Hospital (OUS; 2016/19732). The study was performed in accordance with the Declaration of Helsinki and evaluated by the Regional Committee for Medical and Health Research Ethics for the Southeast Region of Norway (2016/1259). The study is not viewed to be a medical or health related research project regulated by the law of health research and is thereby not subject to presentation (cf. HFL. § 2). Participants in the current study, were fully informed and have given their written consent to participate in the research.
: Not applicable.
: The authors declare that they have no competing interests.