Trekels, Jolien http://orcid.org/0000-0002-4632-441X
Karsay, Kathrin
Eggermont, Steven
Vandenbosch, Laura
Article History
Received: 13 November 2017
Accepted: 6 March 2018
First Online: 23 March 2018
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: The ethical committees of each host university approved the research project.
: Active consent was obtained from both the parents and adolescents before the respondents filled out the paper-and-pencil surveys.