Slagstad, Ketil http://orcid.org/0000-0002-6061-9900
Funding for this research was provided by:
University of Oslo
Article History
Accepted: 3 June 2021
First Online: 22 June 2021
Declarations
:
: The author states that there is no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The research project has been ethically approved by the Norwegian Centre for Research Data.
: Informed consent was obtained from all individual participants included in the study, including access to medical records.