1. University of Udine, Dermatology Department, Piazzale Santa Maria della Misericordia, 15, 33010; Udine, UD Italy
2. Federico II University - Dermatology Department, Via Sergio Pansini, 5, 80131; Napoli, NA Italy
3. Federico II University - Anatomic Pathology Department, Via Sergio Pansini, 5, 80131; Napoli, NA Italy