Funding for this research was provided by:
Academy of Finland (263328)
Academy of Finland (273872)
Academy of Finland (308351)
Article History
Received: 1 December 2018
Accepted: 6 February 2019
First Online: 20 February 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: The study protocol was approved by the University of Helsinki Ethical Review Board in the Humanities and Social and Behavioral Sciences.
: Participation was voluntary, and informed consent forms were collected from both the students and their parents.