1. Department of Child and Adolescent; University Hospitals of Geneva; Geneva; Switzerland
2. Paediatrics and Child Health; University College Cork; Cork; Ireland
3. Guy's and St. Thomas NHS Trust at King's College London; King's Health Partners; MRC Asthma UK Centre in Allergic Mechanisms of Asthma; Department of Paediatric Allergy; Guy's and St. Thomas’ NHS Foundation Trust; London; UK
4. Department of Pediatric Pneumology and Immunology; Charité Universitätsmedizin; Berlin; Germany
5. The Food Allergy Referral Centre; Department of Pediatrics; Veneto Region; Università degli Studi di Padova; Padova; Italy
6. Scientific Center of Children's Health of Russian Academy of Medical Sciences; Moscow; Russia
7. Pediatric Pulmonology & Allergy Unit; Children's Hospital La Fe; Valencia; Spain
8. Allergy Department; 2nd Pediatric Clinic; National & Kapodistrian University of Athens; Athens; Greece
9. OGYEI National Institute of Child Health; Budapest; Hungary
10. Clinic of Children's Diseases; Vilnius University; Vilnius; Lithuania
11. Sachs’ Children's Hospital; Institute of Environmental Medicine; Karolinska Institutet; Stockholm; Sweden
12. Hans Christian Andersen Children's Hospital; Odense University Hospital; Odense; Denmark