State of child and adolescent mental health during the first wave of the COVID-19 pandemic and at the beginning of the 2020¿2021 school year Anna Gatell-Carbó; Elena Alcover-Bloch; Josep Vicent Balaguer-Martínez; Tomás Pérez-Porcuna; María Esteller-Carceller; Patrícia Álvarez-Garcia; Emilio Fortea-Gimeno;

Paediatric endoscopy in Spain: current situation and recent developments María Navalón Rubio; Carmen Jovani Casano; Marta Soria López; Alfonso Rodríguez Herrera; Miguel Ángel López Casado; Víctor Manuel Navas-López; Víctor Vila Miravet;

Physical, social, and emotional impact on patients with congenital heart disease undergoing cardiac catheterization Maricel Licht-Ardila; Alexandra Hurtado-Ortiz; Edgar Fabián Manrique-Hernández; Justo José Santiago Peña;