Smartphone use by children in fast food restaurants in Barcelona (Spain): a direct observation study

de Paz-Cantos S, González-Marrón A, Lidón-Moyano C, Cabriada Í, Cerrato-Lara M, Gómez-Galán R, et al. Smartphone use by children in fast food restaurants in Barcelona (Spain): a direct observation study. Gac Sanit. 2024;38:102421.