Reference charts for the six-minute walk test in healthy school-aged children from the city of Zaragoza, Spain Ana Villamañán Montero; Carlos Martín de Vicente; Juan Pablo García Íñiguez; Feliciano Ramos Fuentes;

Neuroendocrine cell hyperplasia of infancy: Description of 6 cases Laura Gil Blanco; Alicia Hernando Larroy; Javier Sainz García; Carlos Martín de Vicente;

Different clinical presentations of idiopathic pulmonary hemosiderosis Javier Sainz García; Sabina Bona Gazol; Irene Sancho Marquina; Javier Martínez Castillón; Carlos Martín de Vicente;