Funding for this research was provided by:
Transport Accident Commission
Received: 5 June 2018
Accepted: 5 November 2018
First Online: 5 December 2018
Ethics approval and consent to participate
: Ethical approval for this study was initially obtained from the Alfred Health Human Research Ethics Committee (approval Number 398/12); local ethics and research governance procedures were subsequently completed for each study site. Consent procedures conformed with recent guidance regarding ethical issues in CRTs as described in the trial protocol [CitationRef removed].
: Not applicable.
: All authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.