Ruths, Sabine
Haukenes, Inger
Hetlevik, Øystein
Smith-Sivertsen, Tone
Hjørleifsson, Stefan
Hansen, Anneli B
Riiser, Sharline
Meling, Heidi Marie
Baste, Valborg
Funding for this research was provided by:
Research Council of Norway (287884)
Research Council of Norway (287884)
Research Council of Norway (287884)
Research Council of Norway (287884)
Research Council of Norway (287884)
Research Council of Norway (287884)
Research Council of Norway (287884)
Research Council of Norway (287884)
Research Council of Norway (287884)
Article History
Received: 24 March 2021
Accepted: 30 June 2021
First Online: 15 July 2021
Declarations
:
: The study protocol has been approved by the Regional Committee for Medical and Health Research Ethics (REC) West (2017/934) and by the Norwegian Data Protection Authority (17/01372). This study used de-identified administrative health care data from national registries, and REC West granted an exemption from the consent requirement (2017/934). All methods were performed in accordance with the relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.