Trends of COPD in Spain: Changes Between Cross Sectional Surveys 1997, 2007 and 2017 Elena García Castillo; Tamara Alonso Pérez; Adrián Peláez; Patricia Pérez González; Marc Miravitlles; Inmaculada Alfageme; Ciro Casanova; Borja G. Cosío; Pilar de Lucas; Francisco García-Río; José Miguel Rodríguez González-Moro; Juan José Soler-Cataluña; Guadalupe Sánchez; Joan B. Soriano; Julio Ancochea;

Serum Levels of Alpha1-antitrypsin and Their Relationship With COPD in the General Spanish Population Sabina Janciauskiene; David S. DeLuca; Miriam Barrecheguren; Tobias Welte; Marc Miravitlles;

Indoor Radon Exposure and COPD, Synergic Association? A Multicentric, Hospital-Based Case¿Control Study in a Radon-Prone Area Alberto Ruano-Ravina; Candela Cameselle-Lago; María Torres-Durán; Ana Pando-Sandoval; Raquel Dacal-Quintas; Luis Valdés-Cuadrado; Jesús Hernández-Hernández; Angélica Consuegra-Vanegas; José Andrés Tenes-Mayén; Leonor Varela-Lema; Alberto Fernández-Villar; Juan Miguel Barros-Dios; Mónica Pérez-Ríos;