Affiliation: | 1. International Centre for Reproductive Health, Ghent University, , Ghent, Belgium;2. Centre de Recherche en Santé de Nouna, , Nouna, Burkina Faso;3. Navrongo Health Research Centre, , Navrongo, Ghana;4. Muhimbili University of Health and Allied Sciences, School of Public Health and Social Sciences, , Dar Es Salaam, Tanzania;5. Department of Public Health, University of Heidelberg, , Heidelberg, Germany |