Boer, M. http://orcid.org/0000-0001-6223-859X
Cosma, A. http://orcid.org/0000-0002-0603-5226
Twenge, J. M. http://orcid.org/0000-0002-6542-8281
Inchley, J. http://orcid.org/0000-0001-8322-8817
Jeriček Klanšček, H. http://orcid.org/0000-0003-4337-6449
Stevens, G. W. J. M. http://orcid.org/0000-0001-9929-7972
Funding for this research was provided by:
Medical Research Council (MC_UU_00022/1)
Chief Scientist Office, Scottish Government Health and Social Care Directorate (SPHSU16)
Article History
Received: 11 March 2023
Accepted: 25 May 2023
First Online: 22 June 2023
Compliance with Ethical Standards
:
: The authors declare no competing interests.
: This research involves human participants and their data. The study was performed in line with the principles of the Declaration of Helsinki. The study procedures were approved by the institutional ethic committees from each participating country.
: Informed consent was obtained from all individual participants included in the study. Parents of respondents provided active or passive consent, depending on the country.