enquête (4) santé (4) Methods (4) Public health (4) Health (4) Methods (4) Areas (4) Health (4) risque (3) paludisme (3) information (3) épidémiologie (3) taux (3) Epidemiology (3) Care (3) Ci (Chinese poetry) (3) Risk (3) Proportion (3) Metropolitan areas (3) Malaria (3) Epidemiology (3) Design (3) Cities and towns (3) Older people (3) Design (3) Risk factors (3) temps (durée) (2) échantillonnage (2) santé publique (2) projet (2)