Funding for this research was provided by:
National Health and Medical Research Council (9100002)
Australian Government Research Training Program (2017236)
Received: 23 May 2019
Accepted: 31 October 2019
First Online: 14 November 2019
Ethics approval and consent to participate
: The study was approved by the relevant Ethics Committee in Sydney, New South Wales, Australia (no: 18/233). Due to ethical requirements, the committee cannot be named because it may lead to the identification of the study site. Informed consent was obtained from all study participants.
: Not applicable.
: The authors declare that they have no competing interests.