1. Institute of Allergology Charité – Universitätsmedizin Berlin corporate member of Freie Universität Berlin Humboldt‐Universität zu Berlin Berlin Institute of Health Berlin Germany
2. Fraunhofer Institute for Translational Medicine and Pharmacology ITMP Allergology and Immunology Berlin Germany
3. Ambulatorio di Allergologia Clinica San Carlo Paderno Dugnano Italy
4. Hospital del Mar and Research Institute of Barcelona Universitat Pompeu Fabra Barcelona Spain
5. Department of Dermatology Centro Hospitalar e Universitário de Coimbra Coimbra Portugal
6. Faculty of Medicine University of Coimbra Coimbra Portugal
7. Guy's Hospital St John's Institute of Dermatology London UK
8. Department of Dermatology Koç University School of Medicine Istanbul Turkey
9. Department of Dermatology, Venereology and Allergology University Medical Center Göttingen Göttingen Germany
10. Department of Dermatology University Medical Center Mainz Mainz Germany