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Article History

Received: 27 June 2017

Accepted: 25 March 2018

First Online: 16 April 2018

Ethics approval and consent to participate

: Ethics approval and consent to participate for the BackTrack body of research, for which this is one paper, was granted by the University of New South Wales, University of New England, James Cook University, the University of Queensland, and the NSW Aboriginal Health and Medical Research Council.

: Informed consent was obtained from all participants included in this study.

: Two authors (AS & BS) are brothers. Authors BS and MM are, or have been, on the BackTrack Management Advisory Committee (in a voluntary capacity). BS is the manager of the BackTrack program.

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