1 School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds, UK.
2 Leeds Institute of Medical Research at St James's, University of Leeds, Leeds, UK.
3 Department of Respiratory Medicine, Leeds Teaching Hospital NHS Trust, Leeds, UK.
4 Department of Medical Sciences and Public Health and Unit of Allergy and Clinical Immunology, University Hospital "Duilio Casula", University of Cagliari, Cagliari, Italy.
5 Silesian University School of Medicine, Zabrze, Poland.
6 Department of Medical Sciences, Respiratory, Allergy and Sleep Research, Uppsala University, Uppsala, Sweden.
7 EFA European Federation of Allergy and Airways Diseases Patients' Associations, Brussels, Belgium.
8 Allergy Department, 2nd Pediatric Clinic, National Kapodistrian University of Athens, Athens, Greece.
9 Fondazione Policlinico Universitario A. Gemelli - IRCCS, Università Cattolica del Sacro Cuore, Rome, Italy.
10 National Heart and Lung Institute (NHLI), Imperial College London, London, UK.