1. Department of Epidemiology and Public health, Swiss Tropical and Public Health Institute, Basel, Switzerland
2. University of Basel, Basel, Switzerland
3. School of Public Health, Department of Social and Behavioral Science, University of Ghana, Legon, Ghana
4. University of Health and Allied Sciences, Ho, Ghana
5. Centre for Development and Cooperation, Swiss Federal Institute of Technology, Zurich, Switzerland
6. Research Institute of Health Sciences, Ouagadougou, Burkina Faso
7. Manhiça Health Research Centre, Manhiça, Mozambique
8. Faculty of Medicine, Eduardo Mondlane University, Maputo, Mozambique
9. Ifakara Health Institute, Ifakara, Tanzania