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;

Health-related quality of life in preadolescents before and during the lockdown Joaquín González-Cabrera; Jessica Ortega-Barón; Irene Montiel; Juan Manuel Machimbarrena;