1Division of Dermatology, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
2Operative Unit of Microbiology and Virology, Department of Specialized, Experimental, and Diagnostic Medicine, Polyclinic of St. Orsola-Malpighi, University of Bologna, Bologna, Italy
3Pediatric Emergency Unit, Department of Medical and Surgical Sciences (DIMEC), St. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy