Schredl, Michael http://orcid.org/0000-0002-8031-6608
Funding for this research was provided by:
Zentralinstitut für Seelische Gesundheit (ZI)
Article History
Received: 12 June 2020
Accepted: 29 August 2020
First Online: 25 September 2020
Compliance with ethical guidelines
:
: M. Schredl declares that he has no competing interests.
: Informed parental written consent was obtained from all individual participants included in the study. The approval of the school authorities was obtained, but an approval by an ethics committee was not necessary. All studies discussed were in accordance with the ethical standards indicated in each case.