1. Department of Dermatology Copenhagen University Hospital Bispebjerg and Frederiskberg Copenhagen Denmark
2. Dermatology Unit Surgical, Medical and Dental Department of Morphological Sciences Related to Transplant, Oncology and Regenerative Medicine University of Modena and Reggio Emilia Modena Italy
3. Porphyria and Rare Diseases Unit San Gallicano Dermatological Institute ‐ IRCCS Rome Italy
4. Radiology Unit Bernardino Ramazzini Hospital Carpi Italy