Document is current

Article History

Received: 18 September 2018

Accepted: 4 February 2019

First Online: 13 February 2019

Ethics approval and consent to participate

: Based on the Belgian law of May 7, 2004 related to experiments on the human person and on Opinion n°40 of February 12, 2007 of the Advisory Committee on Bioethics of Belgium, the submission of the protocol to an Ethics Committee was not necessary.The protocol was submitted to school authorities of the four school networks in the Federation Wallonia-Brussels who authorized to carry out the survey. In Belgium, schools are under the authority of regional education boards. These authorities are solicited to validate school surveys conducted during school hours.No parents’ active consent was requested by the schools’ authorities. Nevertheless, parents were warned about the implementation of the survey by the schools. Students were clearly informed about the survey content and purposes, and about their full right to not fill in the questionnaire or some questions within the questionnaire.

: Not applicable.

: The authors declare that they have no competing interests.

: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.