1. Allergy and Clinical Immunology; Department Medical Sciences; University of Torino; Torino Italy
2. Department of Biomedical Sciences; Humanitas University; Milan Italy
3. Clinic of Immuno-Allergology; CHU Brugmann; Université Libre de Bruxelles (ULB); Brussels Belgium
4. Department of Allergy and Clinical Immunology; Faculty Hospital Kralovske Vinohrady; Prague Czech Republic
5. Service de Dermatologie; Centre Hospitalier Lyon Sud; Pierre Bénite France
6. Allergy and Asthma Center Westend; Berlin Germany
7. Department of Dermatology and Allergy Center; Odense Research Center for Anaphylaxis; University of Southern Denmark; Odense Denmark
8. Department of Infection and Immunity; Luxembourg Institute of Health; Esch-sur-Alzette Luxembourg
9. Institute for Prevention and Occupational Medicine of the German Social Accident Insurance (IPA); Institute of the Ruhr-Universität Bochum; Bochum Germany
10. Allergology; Department of Dermatology; University Hospital Basel; Basel Switzerland