1. INSERM; UMR912 Economics and Social Sciences Applied to Health & Analysis of Medical Information (SESSTIM); 13006 Marseille France
2. Aix Marseille University; UMR_S912; IRD; 13006 Marseille France
3. ORS PACA; Southeastern Health Regional Observatory; 13006 Marseille France
4. Central Hospital; UMI 233; Yaoundé Cameroon
5. Socio-anthropological Research Institute (IRSA); Catholic University of Central African States; Yaoundé Cameroon
6. Institut de Recherche pour le Développement (IRD); University Montpellier 1; UMI 233; Montpellier France