1. Burnet Institute, Melbourne, Victoria, Australia
2. School of Public Health & Preventive Medicine, Monash University, Melbourne, Victoria, Australia
3. Burnet Institute, Vientiane, Lao PDR
4. Faculty of Health Sciences, National Drug Research Institute, Curtin University, Fitzroy, Melbourne, Victoria, Australia
5. Faculty of Postgraduate Studies, University of Health Sciences, Vientiane, Lao PDR
6. Melbourne School of Population and Global Health, University of Melbourne, Melbourne, Victoria, Australia