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;

How Should We Treat COPD Exacerbations in the Future? By Endophenotyping, Of Course! Clarus Leung; Don D. Sin;

New Classifications of COPD Severity Based on Impulse Oscillometry: A SAIO Grade Base on ECOPD Cohort in China Lifei Lu; Qi Wan; Gaoying Tang; Fan Wu; Zhishan Deng; Jieqi Peng; Cuiqiong Dai; Kunning Zhou; Xiaohui Wu; Shuqing Yu; Yongqing Huang; Changli Yang; Shengtang Chen; Pixin Ran; Yumin Zhou;