surveillance (1) recherche (1) santé publique (1) besoin (1) investissement (1) histoire (1) santé (1) maladie (1) Afrique Centrale (1) automobile (1) Afrique (1) History (1) Care (1) Diseases (1) Archives (1) Methods (1) Interviews (1) Archives (1) Primary health care (1) World health (1) Weights and measures (1) Research (1) Public health (1) Population (1) Persons (1) Optic disc (1) Human beings (1) Interviews (1) History (1) Health (1)