Murphy, Jill. «The Importance of Stakeholder Perception in Understanding Impact: The Basic Integrated Health System (sibasi) Program and Quality of Primary Healthcare in El Salvador». Gerencia y Políticas de Salud 6, no. 12 (junio 1, 2007). Accedido mayo 4, 2024. https://revistas.javeriana.edu.co/index.php/gerepolsal/article/view/2697.