Funding for this research was provided by:
NSW Ministry of Health
Received: 5 December 2018
Accepted: 20 February 2019
First Online: 4 March 2019
Ethics approval and consent to participate
: We obtained written consent from all participants, including parental consent for participants aged 12 and 13 years. Ethics approval was obtained from the University of Sydney Human Research Ethics Committee and the NSW Aboriginal Health and Medical Research Council Ethics Committee.
: Not applicable.
: The authors declare that they have no competing interests.
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