1. Immunodeficiency Centre for Wales; Cardiff UK
2. Department of Immunology; 2nd Faculty of Medicine; Charles University and Motol University Hospital; Prague Czech Republic
3. Department of Molecular Medicine; Sapienza University of Rome; Rome Italy
4. Department of Internal Medicine; Division of Clinical Immunology and Department of Immunology; Erasmus MC; Rotterdam The Netherlands
5. Department of Medicine; Treviso Hospital; University of Padova; Padova Italy
6. Department of Clinical Immunology and Allergology; St. Anne's University Hospital in Brno; Czech Republic
7. Faculty of Medicine; Masaryk University; Brno Czech Republic
8. Department of Allergy; University Hospital Jiménez Díaz Foundation; Madrid Spain