1. Hungarian Angioedema Center of Reference and Excellence Department of Internal Medicine and Hematology Semmelweis University Budapest Hungary
2. Department of Clinical and Environmental Allergology Jagiellonian University Medical College Krakow Poland
3. Allergy and Immunology Unit University of Cape Town Lung Institute Cape Town South Africa
4. Division of Allergy and Clinical Immunology Department of Medicine University of Cape Town Cape Town South Africa
5. Department of Dermatology Medical University of Vienna Vienna Austria
6. Dermatological Allergology Department of Dermatology and Allergy Charité ‐ Universitätsmedizin Berlin Berlin Germany
7. Department for Children and Adolescents University Hospital Frankfurt Goethe University Frankfurt Frankfurt Germany
8. Department of Immunology Barts Health NHS Trust Royal London Hospital London UK
9. Center for Allergy and Asthma Care Central Hong Kong China
10. Angioderma Center Barzilai University Medical Center Ashkelon Israel
11. Department of Dermatology and Allergy Centre Odense University Hospital Odense Denmark
12. Department of Clinical Genetics Odense University Hospital Odense Denmark
13. Clinical Institute University of Southern Denmark Odense Denmark
14. Sorbonne Université Service de Médecine Interne AP‐HP, Hôpital Saint‐Antoine Paris France
15. Allergy and Clinical Immunology Unit Department of Medicine Tel Aviv Sourasky Medical Center and Sackler Faculty of Medicine University of Tel Aviv Tel Aviv Israel
16. Department of Immunology Birmingham Heartlands Hospital University Hospitals Birmingham UK
17. National Center for Hereditary Angioedema Department of Pediatrics Department of Pulmonology and Allergology Comenius University in Bratislava Jessenius Faculty of Medicine Martin Slovakia
18. Auckland DHB Clinical Immunology and Allergy Auckland New Zealand
19. University Clinic of Dermatology Ss Cyril and Methodius University Skopje Macedonia
20. Department of Immunology University Hospital Zurich Zurich Switzerland
21. Allergy, Asthma and Clinical Immunology Alfred Health Melbourne Victoria Australia
22. BioCryst Pharmaceuticals Durham North Carolina USA