Trends in child and adolescent mental health in Catalonia in the context of the COVID-19 pandemic during the 2020¿2021 school year Elena Alcover Bloch; Anna Gatell Carbó; Josep Vicent Balaguer Martínez; Tomás Pérez Porcuna; Olga Salvadó Juncosa; Emilio Fortea Gimeno; Patricia Álvarez Garcia;

Clinical characteristics and mortality risk factors in patients aged less than 18 years with COVID-19 in Mexico and Mexico City Rosa María Wong-Chew; Daniel Ernesto Noyola; Antonio Rafael Villa;

Off-label pediatric medicines in Spain Roi Piñeiro Pérez; Esmeralda Núñez Cuadros; Belén Rodríguez Marrodán; Raquel Escrig Fernández; María Ángeles Gil Lemus; Santiago Manzano Blanco; Cristina Calvo;