1. Melanoma Division IRCCS European Institute of Oncology Milan Italy
2. Unit of Dermatology USL Toscana Centro‐Prato Hospital Prato Italy
3. Dermatology Unit Department of Experimental, Diagnostic and Specialty Medicine Policlinico Sant'Orsola‐Malpighi University of Bologna Bologna Italy
4. Vita‐Salute San Raffaele University Milan Italy
5. Pathology Division IRCCS European Institute of Oncology Milan Italy
6. Dermatology Complex Operative Unit Policlinico Umberto I Sapienza Medical School of Rome Rome Italy
7. PD Hinduja National Hospital and Sir HN Reliance Foundation Hospital Mumbai India