Funding for this research was provided by:
Department of Health, Australian Government (not applicable)
National Health and Medical Research Council (APP1121844)
Received: 30 October 2018
Accepted: 15 January 2020
First Online: 28 January 2020
Ethics approval and consent to participate
: The ethics committees that have provided approvals for the ALSWH are the Australian Government Department of Health Human Research Ethics Committee and the Human Research Ethics Committees at the University of Queensland (2012000132) and the University of Newcastle (H-2011-0371). Participants have been informed at each survey that researchers will be comparing their information with that collected in earlier surveys. Completion of the survey was taken as consent. This method of consent was approved by the Australian Department of Health, the Australian Department of Human Services, and both the University of Queensland and the University of Newcastle Human Research Ethics Committees.
: All authors declare that they have no competing interests.