Urheim, Ragnar
Palmstierna, Tom
Rypdal, Knut
Gjestad, Rolf
Senneseth, Mette
Mykletun, Arnstein
Funding for this research was provided by:
Helse Vest
Article History
Received: 21 January 2019
Accepted: 3 March 2020
First Online: 5 May 2020
Change Date: 15 January 2021
Change Type: Correction
Change Details: An amendment to this paper has been published and can be accessed via the original article.
Ethics approval and consent to participate
: The study is based upon data which were collected routinely. An application was made to use data from patients without their consent, and this was approved by the Regional Committee for Medical and Health Research Ethics for Western Norway (237.06).
: Not applicable.
: The authors declare that they have no competing interests.