1. Department of Paediatric Pulmonology and Immunology, Charité Virchow-Klinikum, Humboldt University, Berlin, Germany
2. Section of Allergy and Clinical Immunology, Imperial College London–National Heart and Lung Institute, Royal Brompton Hospital, London, UK
3. Department of Pulmonology, Division of Allergy, Hôpital Arnaud de Villeneuve, University Hospital of Montpellier, Montpellier and Sorbonne Universités, UPMC Paris 06, UMR-S 1136, IPLESP, Equipe EPAR, Paris, France