Straiton, Melanie
Liefbroer, Aart C.
Hollander, Anna-Clara
Hauge, Lars Johan
Funding for this research was provided by:
Norwegian Institute of Public Health
Article History
Received: 3 October 2022
Accepted: 15 May 2023
First Online: 14 June 2023
Declarations
:
: The authors assert that all procedures contributing to this work comply with the ethical standards of the relevant national and institutional committees on human experimentation and with the Helsinki Declaration of 1975, as revised in 2008. Ethical approval for this study was granted by the Regional Committee for Medical and Health Research Ethics, South East Norway (REK 2014/1970) and registry owners approved the use of their data. Consent to participate was waived by the Regional Committee for Medical and Health Research Ethics, Southeast Norway (REK 2014/1970), since this study uses already existing administrative data.
: Consent to publish was waived by the Regional Committee for Medical and Health Research Ethics, Southeast Norway (REK 2014/1970), since this study uses already existing administrative data.
: The authors declare that they have no competing interests.