1. Virology Unit, Department of Translational Medicine University of Piemonte Orientale Novara Italy
2. Division of Haematology, Department of Translational Medicine University of Piemonte Orientale and “Maggiore della Carità” Hospital Novara Italy
3. Viral Pathogenesis Unit, Department of Public Health and Pediatric Sciences University of Turin Turin Italy
4. CAAD Centre for Translational Research on Autoimmune and Allergic Disease Novara Italy
5. Medical Statistics, Department of Translational Medicine University of Piemonte Orientale Novara Italy
6. Division of Haematology University of Piemonte Orientale and “SS Antonio e Biagio e Cesare Arrigo” Hospital Alessandria Italy
7. Division of Haematology “Santa Croce e Carle di Cuneo” Hospital Cuneo Italy
8. Department of Translational Medicine and New Technologies in Medicine and Surgery, Retrovirus Centre University of Pisa Pisa Italy