Funding for this research was provided by:
Forskningsrådet om Hälsa, Arbetsliv och Välfärd (2019-00492, 2015-00897)
Åke Wiberg Stiftelse (M15-0239)
Söderström König Foundation (SLS-559921, SLS-655791, SLS-745221)
Svenska Spel Research Fundation (Svenska Spel Research Fundation)
Stockholm University
Article History
Received: 10 December 2021
Accepted: 25 November 2022
First Online: 12 December 2022
Declarations
:
: The study was approved by the Regional Ethical Board of Uppsala (Sweden) (Dnr. 2012/187). All the adolescents and their parents gave written informed consent to participate in the study.
: Not applicable.
: All the authors declare they have no competing interests.