1. Experimental Research Laboratories, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
2. Obstetrics and Gynecology Clinics, University of Pavia, Pavia, Italy
3. Molecular Virology Unit, Microbiology and Virology Department, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
4. Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy