1. Heidelberg Institute of Global Health, University of Heidelberg, Heidelberg, Germany
2. Department of Economics and Centre for Modern Indian Studies, University of Göttingen, Göttingen, Germany
3. UNICEF Area Representative for Gabon and São Tomé and Príncipe and to the ECCAS, Libreville, Gabon
4. United Nations Children’s Fund (UNICEF) Gabon & São Tomé and Príncipe, Libreville, Gabon