1. Ifakara Health Institute, Dar es Salaam, Tanzania.
2. Swiss Tropical and Public Health Institute (Swiss TPH), Basel, Switzerland.
3. University of Basel, Basel, Switzerland.
4. School of Public Health and Social Sciences (SPHSS), The Muhimbili University of Health and Allied Sciences (MUHAS), Dar es Salaam, Tanzania.
5. Health Promotion and System Strengthening (HPSS) Project, Dodoma, Tanzania.