1. Dermatology Unit, Department of Medical, Surgical and Neurological Sciences Università degli Studi di Siena Siena Italy
2. Groupe d'Imagerie non invasive de la Société Française de Dermatologie Paris France
3. Department of Medical Biotechnologies University of Siena Siena Italy
4. Dermatology Unit, Department of Medicine and Traslational Surgery Catholic University of Sacred Heart Rome Italy
5. Dermatology Unit, Department of Medical and Surgical Sciences A. Gemelli University Hospital Foundation – IRCCS Rome Italy
6. Department of Dermatology University Hospital of Saint‐Etienne Saint‐Etienne France
7. Department of Dermatology, Hôpital Erasme Université Libre de Bruxelles Brussels Belgium
8. Department of Dermatology, Institut Jules Bordet Université Libre de Bruxelles Brussels Belgium