1. Department of Mother and Child Health; The Referral Centre for Food Allergy Diagnosis and Treatment Veneto Region; University of Padua; Padua Italy
2. Department of Pediatric Pulmonology and Pediatric Allergy; University Medical Center Groningen; University of Groningen; Groningen the Netherlands
3. GRIAC Research Institute; University Medical Center Groningen; University of Groningen; Groningen the Netherlands
4. Department of Pediatrics and Child Health; School of Applied Psychology; School of Medicine; University College Cork; Cork Ireland
5. Department of Paediatrics and Child Health; University College Cork; Cork Ireland
6. Department of Internal Medicine; Section of Allergology; Erasmus MC; Rotterdam the Netherlands
7. Department Gastroenterology; Great Ormond Street Hospital for Sick Children; London UK
8. Allergy & Respiratory Research Group; Centre for Population Health Sciences; The University of Edinburgh; Edinburgh UK
9. David Hide Asthma and Allergy Research Centre; St Mary's Hospital; Isle of Wight UK
10. NIHR Respiratory Biomedical Research Unit; University Hospital Southampton NHS Foundation Trust and University of Southampton Faculty of Medicine; Southampton UK
11. Human Development and Health Academic Unit; Faculty of Medicine; University of Southampton; Southampton UK
12. Division of General Internal Medicine and Primary Care; Brigham and Women's Hospital/Harvard Medical School; Boston MA USA
13. Department of General Practice; University Medical Center Groningen; University of Groningen; Groningen the Netherlands