besoin (1) innovation (1) analyse (1) santé (1) diffusion (1) Afrique (1) méthode (1) ordre (1) Afrique (1) Context (1) Implements (1) Methods (1) Programs (1) Social influence (1) Work (1) Tools (1) Scientific literature (1) Order (1) Manufacturers' agents (1) Health (1) Finance (1) Face (1) Evidence (1) Emotions (1) Diffusion (1) Determinants (1) Commission merchants (1) Chronology (1) Africa, Sub-Saharan (1) Africa (1)