Funding for this research was provided by:
National Health and Medical Research Council (APP1027549)
Received: 20 January 2019
Accepted: 23 May 2019
First Online: 31 May 2019
Ethics approval and consent to participate
: All research procedures were approved prior to the commencement of the study by the University of Queensland’s Human Research Ethics Committee and by the Australian Defence Human Research Ethics Committee. All participants signed an informed consent form.
: Not applicable.
: The authors declare that they have no competing interests.