1 Division of Dermatology Department of Experimental, Diagnostic and Specialty Medicine Sant'Orsola-Malpighi Hospital.
2 Department of Obstetric Gynecological and Pediatric Sciences Operative Unit of Neonatology.
3 Division of Dermatology Department of Experimental Diagnostic and Specialty Medicine Sant'Orsola-Malpighi Hospital University of Bologna Bologna, Italy.