Guerrero, Guadalupe, José López, Nuri Villaseñor, César Gutiérrez, Yasmín Sánchez, Luis Santiago, Omar Martínez, and Nayely Maya Lozano. 2014. “Design and Validation of a Questionnaire to Assess Health Habits of School Children Aged 8-12D”. Revista Chilena De Salud Pública 18 (3):p. 249-256. https://doi.org/10.5354/0719-5281.2014.33915.