Critical appraisal (I): Fundamentals, tools, and application to scientific articles on outcomes and harmful effects Javier González de Dios; María Salomé Albi Rodríguez; Álvaro Gimeno Díaz de Atauri; Laura Cabrera Morente; Elena Pérez González; Carlos Ochoa Sangrador;

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;

Pediatric virtual visits: experiences, preferences, and expectations of patients and caregivers Miren Ibarzabal Arregi; Tregony Simoneau; Jonathan M. Gaffin; María Gimeno Castillo; Isabel Castro Garrido; Claudia María Chaverri Reparaz; Laura Moreno-Galarraga;