1. Infectious and Tropical Diseases Unit, University of Brescia, Italy;
2. Institute of Hygiene, Epidemiology and Public Health, University of Brescia, Italy;
3. Internal Medicine Unit, University of Brescia, Italy;
4. Laboratory of Microbiology and Virology, University of Brescia, Italy;
5. Internal Medicine Unit 3, Spedali Civili General Hospital, Brescia, Italy;
6. Hepatology Unit, Spedali Civili General Hospital, Brescia, Italy;
7. Infectious Diseases, University of Brescia, Italy, and
8. Training and empowering human resources for health development in resource-limited countries, University of Brescia, Brescia, Italy