1. Department of Dermatology Academic Medical Center University of Amsterdam Meibergdreef 9 1105 AZ Amsterdam the Netherlands
2. Medical Sociology Institute of Epidemiology and Preventive Medicine University of Regensburg Regensburg Germany
3. Department of Paediatric Dermatology Our Lady's Children's Hospital Crumlin, Dublin Ireland
4. Department of Clinical Medicine Trinity College Dublin Dublin Ireland
5. National Children's Research Centre Dublin Ireland
6. Department of Dermatology Nantes University Hospital Nantes France
7. Contributing patient
8. Unit for Population‐Based Dermatology Research St John's Institute of Dermatology, Guy's & St Thomas’ NHS Foundation Trust and King's College London London U.K
9. Department of Dermatology and Venereology Aarhus University Hospital Aarhus Denmark
10. Departments of Dermatology and Pediatrics University of California San Diego CA U.S.A
11. Department of Clinical Epidemiology, Biostatistics, and Bioinformatics Academic Medical Centre Amsterdam the Netherlands
12. Nottingham Support Group for Carers of Children with Eczema Nottingham U.K
13. Center for Evidence‐based Healthcare Medizinische Fakultät Carl Gustav Carus, TU Dresden Dresden Germany
14. University Allergy Center University Hospital Carl Gustav Carus Dresden Germany
15. Irish Skin Foundation Dublin Ireland
16. Department of Dermatology and Allergy University Hospital Schleswig‐Holstein Campus Kiel Kiel Germany
17. MRC North West Hub for Trials Methodology Research Department of Biostatistics University of Liverpool Liverpool U.K