Funding for this research was provided by:
Text and Data Mining valid from 2018-07-25
Received: 23 April 2018
Accepted: 26 June 2018
First Online: 25 July 2018
Ethics approval and consent to participate
: Ethical approval for conducting this RCT study was obtained from the independent Ethical Committee of the Faculty of Social and Behavioral Sciences of Utrecht University (FETC17–015). Students, parents and teachers gave active informed consent for their own participation. Additionally, parents gave passive informed consent for students’ participation.
: Not applicable.
: The authors declare that they have no competing interests.
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