1. Centre of Evidence Based Dermatology University of Nottingham Nottingham UK
2. St John's Institute of Dermatology Guy's and St Thomas’ NHS Foundation Trust London UK
3. School of Immunology and Microbial Sciences King's College London London UK
4. Gloucester UK
5. Department of Dermatology and Allergy Ludwig Maximilian University Munich Germany
6. Klinik Thalkirchner Straße Munich Germany
7. Department of Dermatology University Medical Center Groningen University of Groningen Groningen The Netherlands
8. Department of Dermatology and Pediatrics Northwestern University Feinberg School of Medicine Chicago IL USA
9. Department of Dermatology Osaka Habikino Medical Center Osaka Japan
10. Department of Dermatology CHU Nantes Nantes France
11. Department of Dermatology Lund University Malmö Sweden
12. Department of Public Health Science Karlstad University Karlstad Sweden
13. Faculty of Health, Education and Life Sciences Birmingham City University Birmingham UK
14. Primary Care and Population Sciences University of Southampton Southampton UK