Santos-Ramos, Ana Julia, Juan Antonio Córdova-Hernández, Crystell Guadalupe Guzmán-Priego, and Juan Manuel Muñoz-Cano. 2017. “School Breakfast and Healthy Nutritional Education in Elementary School”. Horizonte Sanitario 16 (2): 75-84. https://doi.org/10.19136/hs.a16n2.1474.