1. UOC di Dermatologia, Dipartimento di Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario A. Gemelli – IRCCS Rome Italy
2. Dermatologia, Università Cattolica del Sacro Cuore Rome Italy
3. Dermatology Unit, Department of Medical Surgical and Neurosciences, University of Siena Siena Italy
4. Pathology Unit, Maggiore Hospital, AUSL Bologna Bologna Italy
5. Department of Medical and Surgical Sciences (DIMEC) University of Bologna Bologna Italy
6. Groupe d'Imagerie Cutanée Non Invasive (GICNI) of the Société Française de Dermatologie (SFD) Paris France
7. Department of Dermatology Hôpital Erasme, Université Libre de Bruxelles Brussels Belgium
8. Department of Dermato‐Oncology Institut Jules Bordet, Université Libre de Bruxelles Brussels Belgium