Stensen, Kenneth http://orcid.org/0000-0001-8040-9006
Lydersen, Stian
Stenseng, Frode
Wallander, Jan Lance
Drugli, May Britt
Funding for this research was provided by:
NTNU Norwegian University of Science and Technology
Article History
Accepted: 3 February 2021
First Online: 5 March 2021
Declarations
:
: None of the authors have declared any competing or potential conflicts of interest.
: The study was approved by the Regional Committee for Medical and Health Research Ethics (REK) (reference number: 2011/2252; 2012/1030; 2013/1363).
: Informed consent was obtained from all parents and teachers of included children.
: All procedures performed in studies involving human participants were conducted 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.