Llorens-Ivorra, C., Quiles-Izquierdo, J., Richart-Martínez, M., & Arroyo-Bañuls, I. (2015). Design of a questionnaire to evaluate the food balance of school menus. Spanish Journal of Human Nutrition and Dietetics, 20(1), 40–47. https://doi.org/10.14306/renhyd.20.1.185