Research ethics: From principles to practical aspects Gonzalo Solis Sánchez; Guillermo Alcalde Bezhold; Iciar Alfonso Farnós;

Pediatric research in Spain: Challenges and opportunities Laura Moreno-Galarraga; Cesar Gracía Vera; Irene Rivero-Calle; Federico Martinón-Torres; Ignacio Diez López; Fernando Cabañas; Cristina Calvo;

The minor in Spanish legislation: an ethics perspective María Alija; Isolina Riaño; Montserrat Esquerda;