1. Viral Hepatitis, Oncoviruses and Retroviruses (EVOR) Unit, Department of Infectious Diseases Istituto Superiore di Sanità Rome Italy
2. School of medicine “Magna Graecia” University Catanzaro Italy
3. Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA), Research Centre for Engineering and Agri Food Processing Treviglio BG Italy
4. Department of Environment and Health Istituto Superiore di Sanità Rome Italy