1. Dermatology Unit, Department of Clinical Internal Anesthesiological and Cardiovascular Sciences, “Sapienza” University of Rome, 00161 Rome, Italy
2. Porphyria and Rare Diseases Unit, San Gallicano Dermatological Institute—IRCCS, 00144 Rome, Italy
3. Department of Dermatology, Venereology and Dermatooncology, Semmelweis University, 1085 Budapest, Hungary