Funding for this research was provided by:
Sami Norwegian National Advisory Unit on Mental Health and Substance Use
UiT The Arctic University of Norway
Norwegian Institute of Public Health
University Hospital of North Norway
Nordland Hospital
Article History
Received: 15 January 2019
Accepted: 9 September 2019
First Online: 18 September 2019
Compliance with ethical standards
:
: CE has received research support from the Sami Norwegian National Advisory Unit on Mental Health and Substance Use (SANKS). MTS and SK report no financial or potential conflicts of interest.
: The students and their parents were given written information about the study, and the students provided written consent. The Norwegian Data Inspectorate and the school authorities approved the NAAHS. The Regional Medical Ethical Committee approved the NAAHS and the registry linkage. The Norwegian Institute of Public Health and Statistics Norway carried out the linkage.