Lauer, Romy
Traub, Meike
Hansen, Sylvia
Kilian, Reinhold
Steinacker, Jürgen Michael
Kesztyüs, Dorothea
Funding for this research was provided by:
Baden-Württemberg Stiftung (.)
Article History
Received: 24 June 2019
Accepted: 27 March 2020
First Online: 28 May 2020
Ethics approval and consent to participate
: Approval from the Ethics Committee of Ulm University was obtained. The study was registered in the German Clinical Trials Register (DRKS), Freiburg University, Germany (DRKS-ID: DRKS00000494). Written informed consent was obtained from parents and teachers.
: Not applicable.
: The authors declare that they have no competing interests.