Funding for this research was provided by:
The study is funded on the national level
Text and Data Mining valid from 2018-09-06
Received: 17 November 2017
Accepted: 17 August 2018
First Online: 6 September 2018
Ethics approval and consent to participate
: This study is conducted in accordance with the Declaration of Helsinki. Parents of all participants provided informed consent to participate in this study. The Ethics Committee of the Medical Faculty at Martin-Luther-University Halle-Wittenberg, Germany, granted ethical approval for the German HBSC study 2013/2014. The consent to use the data of the German Sample of HBSC was granted by Prof. Dr. Matthias Richter (Medical Faculty at MLU Halle-Wittenberg) – the principal investigator of HBSC Germany – and the German HBSC study group.
: Not applicable.
: The authors declare that there is no conflict of interest regarding the publication of this paper.
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