1. Division of Infection, Inflammation & Respiratory Medicine The University of Manchester Manchester UK
2. The Allergy Department, 2nd Pediatric Clinic, National & KapodistrianUniversity of Athens Athens Greece
3. Department of Paediatrics Imperial College London London UK
4. Departments of Pediatrics and Epidemiology and Biostatistics, Philip R. Lee Institute for Health Policy Studies University of California San Francisco California
5. Division of Respiratory Medicine, Department of Pediatrics, Child Health Evaluative Sciences, Hospital for Sick Children University of Toronto Toronto Ontario Canada
6. CHU Lille, Pediatric Pulmonology and Allergy Unit, Hôpital Jeanne de Flandre CHRU de Lille and Université Nord de France Lille France
7. Astrid Lindgren Children's Hospital, Lung and Allergy Unit Karolinska University Hospital Stockholm Sweden
8. Department of Women's and Children's Health Karolinska Institutet Stockholm Sweden
9. Pediatric Allergy and Immunology Unit Children's Hospital Ain Shams University Cairo Egypt
10. School of Paediatrics and Faculty of Child Health and Medical Sciences University of Western Australia Perth Western Australia Australia
11. Department of Pediatric Pneumology & Immunology Charité ‐ Universitätsmedizin Berlin Berlin Germany
12. Pediatric Pulmonology & Allergy Unit Children's Hospital La Fe Valencia Spain
13. Pediatric Allergy and Immunology Boston Children’s Hospital Boston Massachusetts
14. School of Medicine Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS) Porto Alegre Brazil
15. Pediatric Department, 2nd Faculty of MedicineCharles University Prague, and University Hospital Motol Prague Czech Republic
16. Novartis Pharma AG Basel Switzerland
17. Observational and Pragmatic Research Institute Singapore Singapore
18. University of Aberdeen Aberdeen UK