Hysing, Mari http://orcid.org/0000-0001-5303-8879
Heradstveit, Ove
Harvey, Allison G.
Nilsen, Sondre Aasen
Bøe, Tormod
Sivertsen, Børge
Funding for this research was provided by:
University of Bergen
Article History
Received: 3 August 2020
Accepted: 25 October 2020
First Online: 7 November 2020
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: All procedures in the present study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The study was approved by the Regional Committee for Medical and Health Research Ethics (REC) in Western Norway (2011/811/REK Vest) and NSD (371974 and 259631).
: Following the regulations from the REC and Norwegian health authorities, adolescents aged 16 years and older can make decisions regarding their health (including participation in health studies), and thus gave consent themselves to participate in the current study and for the linkage to registries. Parents/guardians have the right to be informed, and in the current study, and all parents/guardians received information about the study in advance.