Estimated Worldwide Prevalence of the PI*ZZ Alpha-1 Antitrypsin Genotype in Subjects With Chronic Obstructive Pulmonary Disease Ignacio Blanco; Isidro Diego; César Castañón; Patricia Bueno; Marc Miravitlles;

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;

The Role of Viral Infections on Severe Asthma Exacerbations: Present and Future Iñigo Ojanguren; Imran Satia; Omar S. Usmani;