1. Nottingham Clinical Trials Unit, School of Medicine University of Nottingham Nottingham UK
2. Skin Research Group, School of Medicine University of Dundee Dundee UK
3. Department of Dermatology Ninewells Hospital and Medical School Dundee UK
4. Population Health Research Institute St. George's University of London London UK
5. Rotherham NHS Foundation Trust UK
6. Health Economics Group, Norwich Medical School University of East Anglia Norwich UK
7. Centre of Evidence Based Dermatology, School of Medicine University of Nottingham Nottingham UK
8. Population Health Sciences University of Bristol Bristol UK
9. 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 UK
10. Sheffield Children's Hospital Sheffield UK
11. National Heart and Lung Institute Imperial College London London UK
12. Sheffield Dermatology Research, Department of Infection and Immunity University of Sheffield Sheffield UK
13. Department of Dermatology Oregon Health & Science University Portland Oregon USA