1. Department of Dermatology, Norfolk and Norwich University Hospital , Norwich , UK
2. Norwich Medical School, University of East Anglia , Norwich , UK
3. Erasmus MC Cancer Institute, University Medical Center , Rotterdam , the Netherlands
4. National Disease Registration Service, NHS Digital , Leeds , UK
5. Health Data Insight CIC , Cambridge , UK
6. Cancer Research UK Centre, University of Birmingham , Birmingham , UK
7. Cellular Pathology, Gloucestershire Hospitals NHS Foundation Trust , Gloucester , UK