1. Harvard Center for Population and Development Studies, Harvard University, Cambridge, MA, USA
2. Harvard T.H. Chan School of Public Health, Boston, MA, USA
3. Management and Development for Health, Dar es Salaam, Tanzania
4. Center on Gender Equity and Health, University of CA San Diego, San Diego, CA, USA
5. Department of Family Medicine and Primary Care, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
6. University of Wisconsin–Madison, WI, USA
7. Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
8. Heidelberg Institute of Global Health, Heidelberg University, Heidelberg, Germany