Velásquez, Aníbal. “Why Do Effective Interventions to Improve Childhood Survival Not Reach Those Who Most Need Them?”. Revista Peruana de Medicina Experimental y Salud Pública 28, no. 2 (June 30, 2011). Accessed December 16, 2024. https://rpmesp.ins.gob.pe/index.php/rpmesp/article/view/511.