1. Transylvania University Brasov; Brasov Romania
2. Internal Medicine; Allergy Unit; Ancona Italy
3. Pulmonology; St. Franciscus Gasthuis; Rotterdam the Netherlands
4. Faculty of Medicine; Allergy Division; Porto University; Porto Portugal
5. Allergy; University Hospital of Montpellier; Montpellier France
6. Paediatrics; University Hospital Geneva; Geneva Switzerland
7. Otorhinolaryngology; Ghent University; Ghent Belgium
8. Servico de Imunoalergologia; Hospital Maria Pia; Porto Portugal
9. Department of Orothinolaryngology; University Hospitals Leuven; Leuven Belgium
10. Department of Allergy Research; Allergy Center Wien West; Vienna Austria
11. Department of Pediatrics; Referral Centre for Food Allergy; Padua General University Hospital; Padua Italy
12. Dermatology and Allergy; Hannover Medical School; Hannover Austria
13. Department of Clinical Immunology; Wroclaw Medical University; Wroclaw Poland