1. Centre for Population Health Research, University of South Australia, GPO Box 2471, Adelaide, South Australia 5001, Australia
2. Ehrenberg-Bass Institute for Marketing Science, University of South Australia, GPO Box 2471, Adelaide, South Australia 5001, Australia
3. Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, 90 Sippy Downs, Sippy Downs, Queensland 4556, Australia
4. Discipline of Dietetics and Human Nutrition, La Trobe University, Melbourne, Victoria 3086, Australia
5. Centre for Research and Action in Public Health, Faculty of Health, University of Canberra, Canberra, Australian Capital Territory, Australia
6. School of Human Health and Social Sciences, Central Queensland University, 44 Greenhill Road, Wayville, South Australia 5034, Australia
7. School of Medicine, University of Wollongong, Northfields Avenue, Wollongong, NSW 2522, Australia
8. Discipline of Psychiatry, School of Medicine, Royal Adelaide Hospital, University of Adelaide, Level 4, Eleanor Harrald Building, Adelaide 5005, Australia