1 Centre for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, UK.
2 Dept of Respiratory Diseases, University Hospital Leuven, Katholieke Universiteit Leuven, Leuven, Belgium.
3 Centre for Human and Applied Physiological Sciences, School of Basic and Medical Biosciences, King's College London, London, UK.
4 European Lung Foundation, Sheffield, UK.
5 National Heart and Lung Institute, Imperial College London, London, UK.
6 Medical University of Warsaw, Warsaw, Poland.
7 Servicio de Neumología, Hospital Parc Taulí, Sabadell, Autonomous University of Barcelona (UAB), Barcelona, Spain.
8 Dept of Experimental and Clinical Medicine, University of Florence, Florence, Italy.
9 Service de pneumologie-allergologie, pôle des voies respiratoires, hôpital Larrey, and Center for Pathophysiology Toulouse Purpan, INSERM U1043, CNRS UMR 5282, Toulouse III University, Toulouse, France.
10 Centre for Allergy, Respiratory and Sleep Medicine at Red Cross Maingau Hospital, Frankfurt, Germany.
11 Dept of Allergology, Institution of Internal Medicine, The Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden.
12 Hull York Medical School, Castle Hill Hospital, Hull, UK.
13 Division of Infection, Immunity and Respiratory Medicine, University of Manchester, Manchester, UK.
14 Dept of Pulmonology, Isala Hospital, Zwolle, The Netherlands.