1. Faculty of Public Health, University of Health Sciences, Vientiane, Lao PDR
2. Institute Research and Education Development, University of Health Sciences, Vientiane, Lao PDR
3. Faculty of Earth and Life Sciences, Athena Institute for Research on Innovation and Communication in Health and Life Sciences, Vientiane, Lao PDR
4. School of Public Health and Social Work, Queensland University of Technology, Brisbane, Australia