Hanssen-Doose, Anke
Jaeschke, Robert
Niessner, Claudia
Oriwol, Doris
Worth, Annette
Funding for this research was provided by:
Bundesministerium für Bildung und Forschung (01ER1503, 01ER1503, 01ER1503, 01ER1503)
Pädagogische Hochschule Karlsruhe
Article History
Received: 24 December 2020
Accepted: 12 October 2021
First Online: 22 October 2021
Declarations
:
: The study was approved by the ethics committees of Konstanz University (2008) and by the Karlsruhe Institute of Technology (2014), and conducted in agreement with the Declaration of Helsinki. Participation in the study was voluntary. In advance of their participation, all of the participants, their parents /custodians were fully informed about the aims and contents of the study as well as about data protection. Written informed consent was obtained from each participant (parents/ custodians). The participants were informed that all data collected would be processed anonymously.
: Not applicable.
: The authors declare that they have no competing interests.