Aristotle University of Thessaloniki, Medical University of Vienna - Department of Dermatology, Medical University of Vienna - Department of Dermatology, Memorial Sloan Kettering Cancer Center, University of Tübingen - Centre for Dermatooncology, University of Campania Luigi Vanvitelli, Universidade Federal do Rio Grande do Sul (UFRGS), University Hospital Zurich - Department of Dermatology, Universidad de Buenos Aires, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Universidad de Barcelona - Hospital Clínic Barcelona, Memorial Sloan Kettering Cancer Center, Universidad de Barcelona - Hospital Clínic Barcelona, Chaim Sheba Medical Center, Clinic Thalkrichner Strasse - Department of Dermatology, Tokyo Women's Medical University - Adachi Medical Center, Universidade Federal do Rio Grande do Sul (UFRGS), University of Trieste, Sheba Medical Center, University of Campania Luigi Vanvitelli, Universidad de Buenos Aires, Monash University, University of Queensland, University of Queensland, Tokyo Women's Medical University - Adachi Medical Center, University of Queensland, Hospices Civils de Lyon, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Glenferrien Dermatology, The Alfred Hospital - Victorian Melanoma Service, Lyon Sud Hospital, University of Queensland - Faculty of Medicine, Aristotle University of Thessaloniki, Aristotle University of Thessaloniki, University of Trieste and Aristotle University of Thessaloniki