Health (2) Salud (2) Programs (1) Databases (1) Vaccination (1) Uncertainty (1) Strategy (1) Quality of products (1) Population (1) Perspective (1) National health services (1) Literature (1) Influenza (1) Evaluation (1) Decision making (1) Children (1) Adulthood (1) Programas (1) Estudios (1) Incertidumbre (1) Evidencia (1) Evaluación (1) Edad adulta (1) Gripe (1) Europeos (1) Calidad (1) Toma de decisiones (1) Literatura (1) Perspectiva (1) Población (1)