1. Microbiology and Virology Department Fondazione IRCCS Policlinico San Matteo Pavia Italy
2. Institute of Dermatology Fondazione IRCCS Policlinico San Matteo Pavia Italy
3. Unit of Clinical Epidemiology & Biostatistics, Scientific Direction Fondazione IRCCS Policlinico San Matteo Pavia Italy
4. Department of Clinical, Surgical, Diagnostic and Pediatric Sciences Università degli Studi di Pavia Pavia Italy
5. Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, Institute of Dermatology Università degli Studi di Pavia Pavia Italy