1. Alan Lyell Centre for Dermatology, Queen Elizabeth University Hospital , Glasgow , UK
2. The Dermatology Centre, Salford Royal Hospital, Northern Care Alliance NHS Foundation Trust , Salford , UK
3. Centre for Dermatology Research, Manchester Academic Health Science Centre (MAHSC) and NIHR Manchester Biomedical Research Centre, University of Manchester , Manchester , UK
4. Department of Dermatology, Norfolk & Norwich University Hospitals NHS Foundation Trust , Norwich , UK
5. Pfizer Ltd, Walton on the Hill , Tadworth, Surrey , UK
6. Nuffield Department of Primary Care Health Sciences, University of Oxford , Oxford , UK
7. Royal College of General Practitioners, Research and Surveillance Centre , London , UK
8. The University of Sheffield , Sheffield , UK
9. St John's Institute of Dermatology, King's College London , London , UK
10. Guy's Hospital , London , UK