Cordero Muñoz, Luis Germán, et al. “Quali-Quantitative Study on Healthcare for Children below the Age of 3 at Health Establishments in Nine Underdeveloped Regions of Peru”. Revista Peruana De Medicina Experimental Y Salud Pública, vol. 33, no. 1, Feb. 2016, pp. 21-31, https://doi.org/10.17843/rpmesp.2016.331.1922.