1. Division of Dermatology Department of Experimental Diagnostic and Specialty Medicine (DIMES) University of Bologna Italy
2. Department of Experimental Diagnostic and Specialty Medicine (DIMES) Laboratory of Bioengineering University of Bologna Bologna Italy
3. Dermatology Department University of Modena and Reggio Emilia Modena Italy
4. Skin Cancer Unit Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Meldola Italy
5. Dermatology Unit Department of Clinical and Experimental Medicine University of Parma Parma Italy
6. Section of Anatomic Pathology Department of Health Sciences University of Florence Florence Italy
7. Section of Dermatology Department of Health Sciences University of Florence Florence Italy
8. Department of Medical Surgical and Neurological Science Dermatology Section University of Siena S. Maria alle Scotte Hospital Siena Italy
9. Dermatology Unit University Hospital of St‐Etienne Saint‐Etienne France