1. The Evidence Centre; London
2. Allergy & Respiratory Research Group; Centre for Population Health Sciences; The University of Edinburgh; Edinburgh UK
3. Department of Pediatrics; Center for Food Allergy Diagnosis and Treatment; Veneto Region; University of Padua; Padua Italy
4. Hanover Medical School; Hanover Germany
5. Department of Pathophysiology and Allergy Research; Medical University of Vienna; Vienna Austria
6. David Hide Asthma and Allergy Research Centre; St Mary's Hospital; Newport
7. NIHR Southampton Respiratory Biomedical Research Unit; University of Southampton and University Hospital Southampton NHS Foundation Trust; Southampton
8. Human Development and Health Academic Unit; Faculty of Medicine; University of Southampton; Southampton UK
9. Hospital Vall d'Hebron; Barcelona Spain
10. Division of Paediatric Pulmonology and Paediatric Allergy; Department of Paediatrics; University Medical; Centre Groningen; University of Groningen; Groningen the Netherlands
11. Hans Christian Andersen Children's Hospital; Odense University Hospital; Odense Denmark
12. Laboratory of Medical Allergology; Allergy Clinic; Copenhagen University Hospital; Gentofte Denmark
13. Departments of Experimental Immunology and Otorhinolaryngology; Academic Medical Center; University of Amsterdam; Amsterdam the Netherlands
14. Department of Pediatric Respiratory Medicine and Allergy; Academic Medical Center; Emma Children's Hospital; University of Amsterdam; Amsterdam the Netherlands
15. Transylvania University; Brasov Romania
16. Division of General Internal Medicine and Primary Care; Brigham and Women's Hospital/Harvard Medical School; Boston MA USA