Author/Authors :
Saul S Morris، نويسنده , , Rafael Flores، نويسنده , , Pedro Olinto، نويسنده , , Juan Manuel Medina، نويسنده ,
Abstract :
Background
Scaling-up of effective preventive interventions in child and maternal health is constrained in many developing countries by lack of demand. In Latin America, some governments have been trying to increase demand for health interventions by maki