1. Dermatology and Skin Cancer Unit Arcispedale Santa Maria Nuova (Istituto di Ricovero e Cura a Carattere Scientifico – IRCCS) Viale Risorgimento, 80 42100 Reggio Emilia Italy
2. Dermatology Service Memorial Sloan Kettering Cancer Center 160 E 53rd St New York NY 10022 U.S.A
3. Department of Pathology Arcispedale Santa Maria Nuova (Istituto di Ricovero e Cura a Carattere Scientifico – IRCCS) Viale Risorgimento, 80 42100 Reggio Emilia Italy
4. Department of Dermatology University of Graz Graz Austria
5. Department of Dermatology University of Modena and Reggio Emilia Modena Italy