1. Department of Internal Medicine Section of Allergology and Clinical Immunology Erasmus MC Rotterdam The Netherlands
2. Asthma‐Allergiezentrum Leverkusen Leverkusen Germany
3. Division of Allergy Department of Pulmonology Hôpital Arnaud de Villeneuve University Hospital of Montpellier Montpellier France
4. Severe Asthma Unit Complejo Hospitalario de Navarra Pamplona Spain
5. University Hospital Sv. Ivan Rilski Sofia Bulgaria
6. Department of Dermatology Allergy Unit University Hospital of Zurich Zurich Switzerland
7. Peter Gorer Department of Immunobiology King’s College London London UK