1. Department of Otorhinolaryngology; Klinikum rechts der Isar; Technische Universität München; Munich Germany
2. Department of Otorhinolaryngology, Head and Neck Surgery; University Hospital Ulm; Ulm Germany
3. Allergy, Immunology and Angioedema Center; Sheba Medical Center; Tel Hashomer Israel
4. Department of Dermatology and Venerology; Medical University of Graz; Graz Austria
5. Department of Allergy and Clinical Immunology, Allergie-Centrum-Charité; Department of Dermatology and Allergy; Charité - Universitätsmedizin Berlin; Berlin Germany
6. Tel Aviv Medical Center; Sackler Medical School; Tel Aviv Israel
7. 3rd Department of Internal Medicine; Semmelweis University; Budapest Hungary
8. Service de Reanimation; Hospices Civils de Lyon; Hôpital Edouard Herriot; Lyon France
9. Azienda Ospedaliera V. Cervello; Palermo Italy
10. Department of Dermatology; Angers University Hospital; Angers France
11. Department of Pulmonology and Immunology; Lithuanian University of Health Sciences; Kaunas Lithuania
12. Internal Medicine Department; National Reference Centre for Angioedema; Grenoble University Hospital; Grenoble France
13. Allergy Unit; Department of Dermatology; University Hospital Zürich; Zürich Switzerland
14. Shire Human Genetics Therapies (HGT); Lexington MA USA
15. Ospedale Luigi Sacco; Università degli Studi di Milano; Milan Italy