1. Department of Allergology Medical University of Gdansk Gdansk Poland
2. Department of Dermatology and Allergy Biederstein Technical University of Munich, School of Medicine Munich Germany
3. Allergy Unit Azienda Ospedaliera Universitaria Integrata di Verona Verona Italy
4. Department of Dermatology, Venereology and Allergology Medical University of Gdansk Gdansk Poland
5. Department of Hematology University Medical Center Groningen, University of Groningen Groningen The Netherlands
6. Department of Allergology University Medical Center Groningen The Netherlands
7. Department of Immunology Allergology Rheumatology University of Antwerp and Antwerp University Hospital Edegem Belgium
8. Department of Medicine I Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Germany and German Cancer Consortium (DKTK), Partner Site Freiburg, and German Cancer Research Center (DKFZ) Heidelberg Germany
9. Dagmar von Bubnoff, Department of Dermatology, Allergy and Venerology University of Schleswig Holstein Lübeck Germany
10. Department of Dermatology Medical Centre‐University of Freiburg, Faculty of Medicine, University of Freiburg Freiburg Germany
11. Dermatologie Uniklinik Köln Köln Germany
12. Brno University Hospital Brno Czech Republic
13. Department of Dermatology Kepler University Hospital Linz Austria
14. Unit of Dermatology and CEREMAST, Pitié‐Salpêtrière Hospital Sorbonne Université Paris France
15. Department of Hematological Biology and CEREMAST, Pitié‐Salpêtrière Hospital Paris Sorbonne University Paris France
16. Department of Hematology Fondazione IRCCS Fondazione Policlinico San Matteo Pavia Italy
17. Department of Molecular Medicine University of Pavia Pavia Italy
18. Istanbul University Istanbul Faculty of Medicine Istanbul Türkiye
19. Medical University of Graz, Univ.Klinik für Dermatologie Graz Austria
20. Pediatric Dermatology, Internal Medicine, Azienda Ospedaliera Università di Padova Padova Italy
21. Semmelweis University Budapest Budapest Hungary
22. Stanford University School of Medicine, Hematology Clinic Stanford USA
23. Department of Oncology, Hematology, Hemostaseology and Stem Cell Transplantation University Hospital RWTH Aachen, Center for Integrated Oncology Aachen, Bonn Cologne, Duesseldorf (CIO ABCD) Aachen Germany
24. Universitätsklinikum Leipzig AöR Leipzig Germany
25. Universitätsmedizin Mannheim, III.Medizinische Klinik Mannhein Germany
26. University of Salerno Salerno Italy
27. Uppsala University Hospital Uppsala Sweden
28. KU Leuven Department of Microbiology, Immunology and Transplantation, Allergy and Clinical Immunology ResearchGroup and MASTeL University Hospitals Leuven Leuven Belgium
29. Department of Medicine, Section of Hematology University of Verona Verona Italy
30. Clinic for Hematology and Oncology Kepler University Hospital Linz Austria
31. Department of Hematology and Oncology Helios Pforzheim Pforzheim Germany
32. Department of Public Health and Caring Sciences Uppsala University Uppsala Sweden
33. Department of Internal Medicine I, Division of Hematology and Hemostaseology Medical University of Vienna Vienna Austria
34. Ludwig Boltzmann Institute for Hematology and Oncology Medical University of Vienna Vienna Austria
35. Division of Allergy, Department of Dermatology University Hospital Basel and University of Basel Basel Switzerland
36. Invicta Fertility and Reproductive Center, Molecular Laboratory Sopot Poland