National recommendations on pediatric donation Antonio Rodríguez Núñez; Alicia Pérez Blanco;

Increasing trend in patients with life-limiting and complex chronic conditions Javier Ochoa-Brezmes; Pablo del Villar Guerra; Jesús Andrés de Llano; Jesús Manuel Marugán de Miguelsanz;

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