1. Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
2. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
3. Department of Health Behavior, Emory University School of Public Health, Atlanta, GA, USA
4. Futures Group, Washington, DC, USA
5. Mbabane, Swaziland
6. University of Stellenbosch, Stellenbosch, South Africa
7. Ministry of Health and Social Welfare, Mbabane, Swaziland
8. Department of Health, Behavior and Society, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA