1. Department of Non‐Communicable Disease Epidemiology Faculty of Epidemiology and Population Health London School of Hygiene and Tropical Medicine London UK
2. Centre for Longitudinal Studies Department of Social Science University College London London UK
3. Department of Medical Statistics Faculty of Epidemiology and Population Health London School of Hygiene and Tropical Medicine London UK
4. MRC Integrative Epidemiology Unit University of Bristol Bristol UK
5. Nottingham Support Group for Carers of Children with Eczema Nottingham UK
6. National Heart & Lung Institute Imperial College London London UK
7. Clinical Medicine Trinity College Dublin Dublin 2 Ireland
8. Department of Dermatology University of California San Francisco San Francisco CA USA
9. Health Data Research UK London UK