Funding for this research was provided by:
University Of Stavanger
Received: 19 March 2020
Accepted: 22 February 2021
First Online: 11 March 2021
: The authors declare that they have no conflict of interest.
: To ensure that the present study adheres to the proper guidelines for the protection of human subjects, the study was formally approved by the Norwegian Social Science Data Services (NSD).
: Only students with written consent from parents or guardians were allowed to participate in the study.
: All participant had a signed consent from parents or guardian allowing for publication of data.