1. Skin Cancer Unit; Arcispedale Santa Maria Nuova; Instituto di Ricovera e Cura a Carattere Scientifico (IRCCS); Reggio Emilia Italy
2. State Clinic of Dermatology; Hospital of Skin and Venereal Diseases; Thessaloniki Greece
3. Dermatology Center; Nemours France
4. Department of Dermatology; Hospital de Sant Pau i Santa Tecla; Tarragona Spain
5. Unit of Dermatology; Arcispedale Santa Maria Nuova; Instituto di Ricovera e Cura a Carattere Scientifico (IRCCS); Reggio Emilia Italy
6. Department of Dermatology; Medical University of Graz; Graz Austria