1. Implementation Research Division The Aurum Institute Johannesburg South Africa
2. The University of the Witwatersrand School of Public Health Johannesburg South Africa
3. Department of Emergency Medicine Johns Hopkins School of Medicine Baltimore MD USA
4. Department of International Health Johns Hopkins Bloomberg School of Public Health Baltimore MD USA
5. Department of Sociology American University Washington DC USA
6. Department of Medicine Johns Hopkins University School of Medicine Baltimore MD USA
7. Department of Health, Behavior, and Society Johns Hopkins Bloomberg School of Public Health Baltimore MD USA