1. Department of Dermatology, Elbe Kliniken, Stade, Germany
2. Department of Dermatology and Allergy, Skin Cancer Center, Charité Universitätsmedizin Berlin, Berlin, Germany
3. Department of Medical Oncology, Fundación Instituto Valenciano de Oncología, Valencia, Spain
4. Department of Dermatology and INSERM U1058 ‘pathogenesis and control of chronic infections’, University of Montpellier, Montpellier, France
5. Department of Medical Oncology, Onkologikoa-Oncology Institute Gipuzkoa, Gipuzkoa, Spain
6. Department of General and Oncologic Dermatology Ambroise Paré Hospital, APHP; EA 4340 ‘Biomarkers in cancerology and hemato-oncology’, UVSQ, Université Paris-Saclay, Boulogne-Billancourt, France
7. Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany and Department of Dermatology, Venereology and Allergology; University Medical Center, Ruprecht-Karl University of Heidelberg, Mannheim, Germany
8. RS McLaughlin Durham Regional Cancer Centre, Lakeridge Health, Oshawa, Oshawa, Ontario, Canada
9. Dermatology Unit, Gustave Roussy and Paris-Saclay University, Villejuif, France
10. Medical Oncology, Instituto de Oncologia de Rosario, Rosario, Santa Fe, Argentina
11. Departments of Medical and Surgical Oncology, Instituto Alexander Fleming, Buenos Aires, Argentina
12. Cancer Institute São Vicente de Paulo, Passo Fundo, RS, Brazil
13. UPMC Hillman Cancer Center, University of Pittsburgh, Pittsburgh, PA 15213, USA
14. Department of Medical Oncology, Mayo Clinic, Rochester, MN 55905, USA
15. Department of Medical Oncology, Vall d'Hebron Hospital and VHIO (Vall d'Hebron Institute of Oncology), Barcelona, Spain
16. Novartis Pharmaceuticals Corporation, East Hanover, NJ 07936, USA
17. Analysis Group, Inc. Montreal, Quebec, Canada
18. Navigant Germany GmbH, Berlin, Germany
19. Departments of Cutaneous Oncology and Sarcoma, Moffitt Cancer Center, Tampa, FL 33612, USA