1. CAAD-Center for Translational Research on Autoimmune and Allergic Disease, University of Piemonte Orientale , Novara, Italy
2. Aging Project, Department of Translational Medicine, University of Piemonte Orientale , Novara, Italy
3. Education and Research area, Health Professions Direction, Maggiore Della Carità Hospital , Novara, Italy
4. Medical Statistics, Department of Translational Medicine, University of Piemonte Orientale , Novara, Italy
5. Unit of Microbiology and Virology, Department of Laboratory Medicine, "Maggiore della Carità" Hospital , Novara, Italy
6. Virology Unit, Department of Translational Medicine, University of Piemonte Orientale , Novara, Italy
7. Occupational Health Unit, Specialist Medical and Oncological Department, "Maggiore della Carità" University - Hospital , Novara, Italy