Meland, Eivind
Breidablik, Hans Johan
Thuen, Frode
Samdal, Gro Beate
Article History
Received: 27 November 2020
Accepted: 2 March 2021
First Online: 12 March 2021
Declarations
:
: Not applicable.
: All protocols were carried out in accordance with relevant guidelines and regulations. The study was approved by the Norwegian Regional Committee for Medical and Health research Ethics, approval number ‘2011/510 REK vest’. Student participation was confidential and voluntary. Informed written consent was obtained from both parents and students.
: None declared.