1. First Department of Dermatology, School of Medicine, Aristotle University, Thessaloniki, Greece
2. Skin Cancer Unit, Arcispedale Santa Maria Nuova Istituto di Ricovero e Cura a Carattere Scientifico, Reggio Emilia, Italy
3. Department of Dermatology, University of Modena, Modena, Italy
4. Department of Dermatology, University of Campania, Naples, Italy