A call for caution in the use of screens: a lack of evidence of risk is not evidence of a lack of risk María Angustias Salmerón-Ruiz; Irene Montiel; Catherine L¿Ecuyer;

Impact of digital media on development and physical health María Angustias Salmerón-Ruiz; Cristina García de Ribera; Valero Sebastián Barberán; Lefa Eddy Ives; Julio Álvarez-Pitti;

Association between attention-deficit/hyperactivity symptoms and sleep in preschoolers Rita Gomes; Bebiana Sousa; Diana Gonzaga; Catarina Prior; Marta Rios; Inês Vaz Matos;