Lyngstad, Siv Hege http://orcid.org/0000-0001-6284-1719
Gardsjord, Erlend Strand
Engen, Magnus Johan
Haatveit, Beathe
Ihler, Henrik Myhre
Wedervang-Resell, Kirsten
Simonsen, Carmen
Melle, Ingrid
Færden, Ann
Funding for this research was provided by:
Helse Sør-Øst RHF (#2006233, #2006258, #2011085, #2014102, #2015088)
Norges Forskningsråd (223273/F50)
Stiftelsen Kristian Gerhard Jebsen (SKGJ-MED-008)
Article History
Received: 23 September 2019
Accepted: 8 February 2020
First Online: 4 March 2020
Conflicts of interest
: All authors declare that they have no conflicts of interest.
: All procedures performed in this study involving human participants were in accordance with the ethical standards of the 1964 Helsinki declaration and its later amendments. The Regional Ethics Committee for Medical Research (#2014/2345) and the Norwegian Data Inspectorate approved of the study.
: Informed, written consent was obtained from all individual participants included in the study.