1. Institute of Allergology Charité—Universitätsmedizin Berlin corporate member of Freie Universität Berlin and Humboldt‐Universität zu Berlin Berlin Germany
2. Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Immunology and Allergology Berlin Germany
3. University of Toronto Toronto ON Canada
4. Department of Dermatology Medical University of Graz Graz Austria
5. Department of Allergy & Immunology Hospital Quironsalud Bizkaia Bilbao Spain
6. Center for Children and Adolescents University Hospital Frankfurt Frankfurt Germany
7. Division of Rheumatology, Allergy and Immunology Massachusetts General Hospital Boston Massachusetts USA
8. Romanian Hereditary Angioedema Expertise Centre Mediquest Clinical Research Center Sangeorgiu de Mures Romania
9. National Reference Center for Angioedema (CREAK) Angioedema Center of Reference and Excellence (ACARE) Grenoble Alpes University Hospital Grenoble France
10. Department of Dermatology University Medical Center Johannes Gutenberg University Mainz Germany
11. HAE International (HAEi) Skanderborg Denmark
12. Department of Pediatric Immunology Childrens Hospital Skåne University Hospital Lund Sweden
13. Icahn School of Medicine at Mount Sinai New York NY USA
14. Clinical Institute University of Southern Denmark Odense Denmark
15. Department of Clinical Genetics Odense University Hospital Odense Denmark
16. Allergy Department Hospital Universitario La Paz IdiPaz, CIBERER U754 Madrid Spain
17. Department of Systems Medicine University Hospital of Padua Padua Italy
18. Department of Vascular Medicine Amsterdam UMC/University of Amsterdam Amsterdam The Netherlands
19. Department of Internal Medicine and Haematology Hungarian Angioedema Center of Reference and Excellence Semmelweis University Budapest Hungary
20. Clinical Immunology North Bristol NHS Trust Bristol UK
21. Marycliff Clinical Research Principle Research Solutions Spokane Washington USA
22. Clinical Immunology Centro Universitario FMABC Sao Paulo Brazil
23. Instituto Politécnico Nacional SEPI‐ENMH Mexico City Mexico
24. Department of Dermatology Hiroshima Citizens Hospital Hiroshima Japan
25. Department of Dermatology Hiroshima University Hiroshima Japan
26. Department of Internal Medicine Seoul National University College of Medicine Seoul Korea
27. Division of Pulmonary, Critical Care, Allergy and Immunology Medical university of South Carolina Charleston South Carolina USA
28. Department of Medicine Campbelltown Hospital and Western Sydney University Sydney NSW Australia
29. Department of Immunology Barts Health NHS Trust London UK
30. Division of Allergy, Immunology, and Rheumatology Department of Pediatrics Mackay Memorial Hospital Hsinchu Taiwan
31. Division of Allergy and Immunology Department of Internal Medicine Morsani College of Medicine University of South Florida Tampa Florida USA
32. Department of Immunology Auckland District Health Board and Department of Medicine University of Auckland Auckland New Zealand
33. Internal Medicine Allergy Division University of Texas Health Science Center Dallas Texas USA
34. Division of Immunology Department of Pediatrics Boston Children's Hospital Harvard Medical School Boston Massachusetts USA
35. Unidad de Alergia, Asma e Inmunología Clínica Buenos Aires Argentina
36. Pediatrics Haemophilia Centre Rhine Main (HZRM) Moerfelden‐Walldorf Germany
37. H. Especialidades C.M.N.SXXI, I.M.S.S. México City Mexico
38. Department of Dermatology, Venereology and Allergology Division of Evidence‐Based Medicine Charité ‐ Universitätsmedizin Berlin corporate member of Free University of Berlin Humboldt University of Berlin, and Berlin Institute of Health Berlin Germany
39. Respiratory, Allergy and Clinical Immunology Unit Internal Medicine Department Vinmec Healthcare System College of Health Sciences VinUniversity Hanoi Vietnam
40. Genetic Unit of Nutrition National Institute of Pediatrics Mexico City Mexico
41. Department of Pediatrics Nippon Medical School Tokyo Japan
42. Division of Allergy and Clinical Immunology University of Cape Town Cape Town South Africa
43. Allergy and Immunology Unit University of Cape Town Lung Institute Cape Town South Africa
44. Department of Clinical and Environmental Allergology Jagiellonian University Medical College Krakow Poland
45. Allergy Hospital Universitario Severo Ochoa Madrid Spain
46. Angioderma Center Barzilai University Medical Center Ashkelon Israel
47. Division of Rheumatology, Allergy and Immunology University of California San Diego La Jolla California USA
48. Departments of Medicine and Medical Oncology University of Alberta Edmonton AB Canada
49. Section of Adult Allergy & Immunology Department of Medicine King Faisal Specialist Hospital & Research Centre Riyadh Saudi Arabia
50. Clinical Immunology and Allergy Royal Adelaide Hospital Adelaide SA Australia
51. Institute of Pharmacology University of Bern Bern Switzerland
52. Division of Allergy and Clinical Immunology Bnai Zion Medical Center Affiliated with Rappaport Faculty of Medicine Technion‐Israel Institute of Technology Haifa Israel
53. Department of Internal Medicine ASST Fatebenefratelli Sacco Ospedale Luigi Sacco‐University of Milan Milan Italy
54. Department of Allergy and Clinical Immunology Bejing Union Medical College Hospital & Chinese Academy of Medical Sciences Bejing China
55. University of California, San Diego San Diego California USA
56. Departments of Medicine and Pediatrics Penn State University Hershey Pennsylvania USA