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Article History

First Online: 4 October 2017

Compliance with Ethical Standards

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: Author numbers one, six and seven are named as Chief Investigators on the grant. Author number two is employed in a research position from the grant funding. No other conflicts of interest are recorded.

: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or co6-23mparable ethical standards.

: The University of Western Australia Human Ethics Research Committee (RA/4/1/1970) approved the project. Individualised information packs were prepared for the school principals, teachers and parents approached to participate in this study. Written consent was obtained at each level with the parents/guardians of participating children also providing written consent for participation of their child. Those involved in the study (principals, teachers, parents/guardians or children) were free to withdraw at any time from the project without prejudice or the need to justify their decision. In the event of a withdrawal, all records related to their participation were destroyed unless an explicit or very strong implicit reason was given to retain the data (e.g., moving state but requesting to be informed about the study outcomes).

: Informed consent was obtained from all individual participants included in the study or in the case of young children, from their parents or legal guardians.