1. Allergy Unit Hospital Regional Universitario de Málaga and Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina‐IBIMA Plataforma BIONAND Málaga Spain
2. RETICS Asma reacciones adversas y alérgicas (ARADYAL) and RICORS Red De Enfermedades Inflamatorias (REI) Madrid Spain
3. Department of chest disease, Division of Allergy & Immunology Ankara University School of Medicine Ankara Turkey
4. Immunology Department Centre de Diagnòstic Biomèdic, Hospital Clínic de Barcelona Barcelona Spain
5. Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Universitat de Barcelona Barcelona Spain
6. Department of Clinical Medicine and Department of Clinical Immunology Aarhus University and Aarhus University Hospital Aarhus N Denmark
7. Department of Dermatology and Allergy Biederstein School of Medicine, Technical University Munich Munich Germany
8. Medicine Department Malaga University Málaga Spain
9. Allergy Clinic, Department of Dermatology and Allergy Herlev and Gentofte Hospital, University of Copenhagen and Department of Clinical Medicine, University of Copenhagen Kobenhavn Denmark
10. Sorbonne Université, INSERM, Institut Pierre Louis d'Epidémiologie et de Santé Publique, AP‐HP.Sorbonne Université, Hôpital Tenon, Département de dermatologie et allergologie Paris France
11. Allergy & Severe Asthma Service St Bartholomew's Hospital, Barts Health NHS Trust London UK
12. Department of Women‐Children‐Teenagers University Hospital of Geneva Geneva Switzerland
13. Faculty of Medicine and Health Sciences, Department of Immunology, Allergology, Rheumatology and the Infla‐Med Centre of Excellence, Antwerp (Belgium) and Immunology, Allergology, Rheumatology Antwerp University Hospital, University of Antwerp Antwerp Belgium
14. Department of Immunology and Allergology AZ Jan Palfijn Gent Ghent Belgium