1. The Pediatric Allergy Clinic; Sheba Medical Center; Tel Hashomer and the Sackler Faculty of Medicine; Safra Children’s Hospital; Tel Aviv University; Tel Aviv Israel
2. Allergy Service; Infanta Leonor University Hospital; Madrid Spain
3. Allergy and Clinical Immunology Department; CHP; Porto Portugal
4. Department of ENT and Pediatrics; Academisch Medisch Centrum; Amsterdam The Netherlands
5. Hospital Sírio Libanês; São Paulo Brazil
6. Division of Allergy; Department of Pulmonology; Hôpital Arnaud de Villeneuve; University Hospital of Montpellier; Montpellier France
7. UPMC Paris 06; UMR-S 1136; IPLESP; Equipe EPAR; Sorbonne Universités; Paris France
8. Paediatric Pulmonology & Allergy Service; Assistance Publique-Hôpitaux de Paris; Hôpital Necker-Enfants Malades; Paris France
9. Department of Paediatrics; Kandang Kerbau Women’s and Children’s Hospital; Singapore Singapore
10. Geneva University Hospital; Geneva Switzerland
11. Pediatric Allergy Department; School of Medicine; Hacettepe University; Ankara Turkey
12. Allergy Unit; Department of Pediatric Medicine; Anna Meyer Children’s University Hospital; Florence Italy
13. Allergy Service; Infanta Leonor University Hospital; Spain University; Madrid Spain
14. University of Belgrade; Faculty of Medicine; University Children’s Hospital; Belgrade Serbia