Forsén, L.
Søgaard, A. J.
Holvik, K.
Meyer, H. E.
Omsland, T. K.
Stigum, H.
Dahl, C. http://orcid.org/0000-0001-8143-0907
Funding for this research was provided by:
Norges Forskningsråd (275270)
Article History
Received: 23 October 2019
Accepted: 12 February 2020
First Online: 24 February 2020
Compliance with ethical standards
: The study and the linkages of data were approved by the Regional Committee for Medical and Health Research Ethics, the Norwegian Data Protection Agency, the Directorate of Health, The Norwegian Patient Registry, the Norwegian Institute of Public Health and Statistics Norway.
: None.
: The interpretation and reporting of these data are the sole responsibility of the authors, and no endorsement by the Norwegian Directorate of Health is intended nor should be inferred.