6 UCL Respiratory, University College London, London, UK.
7 Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, UK.
8 Dept of Medicine, University of Colorado, Denver, Aurora, CO, USA.
9 Iberoamerican Cochrane Center, Barcelona, Spain.
10 Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland.
11 Division of Infection, Immunology and Respiratory Medicine, The University of Manchester and Manchester University NHS Foundation Trust, Manchester, UK.
12 Respiratory Medicine, Dept of Medical Sciences, University of Ferrara, Ferrara, Italy.
13 Dept of Internal Medicine, Christian-Albrechts University, Kiel and LungenClinic Grosshansdorf, Airway Research Centre North, German Centre for Lung Research, Grosshansdorf, Germany.
14 University of Texas Health Science Center and South Texas Veterans Health Care System, San Antonio, TX, USA.
15 Airways Disease Section, National Heart and Lung Institute, Imperial College London, UK; co-chair, representing the European Respiratory Society.