Funding for this research was provided by:
The Regional Health Authorities of Norway (243852)
The North Norwegian Health Authorities (14083)
Vestre Viken Hospital Trust (1903007)
Received: 5 September 2019
Accepted: 28 October 2019
First Online: 21 November 2019
Compliance with ethical standards
: The study was approved by The Regional Committee for Medical and Health Research Ethics (REK 2014/2260).
: Tove T Borgen, Åshild Bjørnerem, Camilla Andreasen, Cathrine Brunborg, Lars M Hübschle, Ellen M Apalset, Jan-Erik Gjertsen, Trude Basso, Ida Lund, Ann Kristin Hansen, and Cecilie Dahl declare that they have no conflict of interest. Lene B Solberg has received speaker honorarium from Eli Lilly. May-Britt Stenbro has received speaker fees from Eli Lilly, Amgen, and Takeda. Wender Figved has received speaker fees from Ortomedic AS. Jens-Meinhard Stutzer has received grants for educational activities from BSN Medical. Lars Nordsletten has received speaker fees from Novartis, Eli Lilly, and Ortomedic AS. Frede Frihagen has received grants for educational activities from Eli Lilly, Amgen, and Takeda. Erik F Eriksen has received speaker fees from Novartis, Eli Lilly, Amgen, MSD, EffRx, IDS, and Shire.