1. Department of Public Health, Faculty of Medicine and Biomedical Sciences, University of Yaounde I, Yaounde, Cameroon; Policy and Programme Analysis Division, Health Economics and Policy Research and Evaluation for Development Results Group (HEREG), Yaounde, Cameroon; Economic and Social Division, Strategic Purchasing for System Performance, Monitoring and Evaluation Consulting Group, Yaounde, Cameroon
2. Department of Public Health, Faculty of Medicine and Biomedical Sciences, University of Garoua, Garoua, Cameron; Policy and Programme Analysis Division, Health Economics and Policy Research and Evaluation for Development Results Group (HEREG), Yaounde, Cameroon
3. Economic and Social Division, Strategic Purchasing for System Performance, Monitoring and Evaluation Consulting Group, Yaounde, Cameroon; Africa Innovation Technologies & Services, Yaounde, Cameroon
4. Policy and Programme Analysis Division, Health Economics and Policy Research and Evaluation for Development Results Group (HEREG), Yaounde, Cameroon; Africa Innovation Technologies & Services, Yaounde, Cameroon