1. DISSAL Department of Dermatology, IRCCS AOU San Martino-IST, Largo Rosanna Benzi, 10, 16132 Genoa, Italy
2. Laboratory of Medical Microbiology, Department of Biotechnology & Life Sciences, University of Insubria, Varese, Italy
3. Laboratory of Molecular Microbiology & Virology, School of Medicine, University of Milano-Bicocca, 20900 Monza, Italy