van Vuuren, Cornelia Leontine http://orcid.org/0000-0002-9780-769X
Uitenbroek, Daan G.
van der Wal, Marcel F.
Chinapaw, Mai J. M.
Article History
Received: 29 May 2017
Accepted: 11 April 2018
First Online: 26 April 2018
Compliance with ethical standards
:
: This study is registered at the Dutch Data Protection Authority and meets national ethics and privacy requirements. Before data collection, information letters were sent to parents and students. A passive informed consent procedure was used, so students and their parents could decide to not to complete the questionnaire. This method of passive agreement is in accordance with Dutch legal standards. Medical ethical approval was sought before analysis; however, our request was not considered as observational studies on anonymised data are not subject for ethical approval.
: On behalf of all authors, the corresponding author states that there is no conflict of interest.