1 Dermatology Unit, University of Campania "Luigi Vanvitelli", Naples, Italy.
2 Department of Dermatology, Medical University of Vienna, Vienna, Austria.
3 First Department of Dermatology, Medical School, Faculty of Health Sciences, Aristotle University Thessaloniki, Thessaloniki, Greece.
4 Department of Dermatology, University of Modena and Reggio Emilia, Modena, Italy.
5 Azienda Sanitaria Locale, IRCCS di Reggio Emilia, Centro Oncologico ad Alta Tecnologia Diagnostica-Dermatologia, Reggio Emilia, Italy.
6 Dermatology Department, Melanoma Unit, Hospital Clínic de Barcelona, Instituto de Investigaciones Biomédicas August Pi i Sunye, Universitat de Barcelona, Barcelona, Spain.
7 Pathology Unit, University of Campania "Luigi Vanvitelli", Naples, Italy.
8 Department of Dermatology, Lyons Cancer Research Center, Lyon 1 University, Lyon, France.