Evidence-based medicine: 5 steps to navigate uncertainty Rafael Martín-Masot; Carlos Ochoa Sangrador; Jaime Javier Cuervo Valdés; Carolina Blanco Rodríguez; Paz González Rodríguez; Javier González de Dios;

Main changes in the ¿COVID-19 in paediatrics¿ clinical practice guideline Javier González de Dios; Victoria Martínez Rubio; Álvaro Giménez Díaz de Atauri; Carlos Ochoa Sangrador; Enrique Rodríguez-Salinas Pérez; Sergio Flores Villar; Jaime Javier Cuervo Valdés;

Consequences of COVID-19 pandemic over acute bronchiolitis hospitalizations in the center and east of Spain Juan Manuel Rius-Peris; Jesús Lucas-García; Mónica García-Peris; Pascual Escrivá Tomás; José Miguel Sequí-Canet; Javier González de Dios;