1 Hepatology Unit, Reference Centre of the Tuscany Region for Chronic Liver Disease and Cancer, University Hospital of Pisa, Pisa, Italy.
2 Infectious Diseases Unit, Azienda Ospedaliera Universitaria Senese and Department of Biotechnology, University of Siena, Siena, Italy.
3 Health Technology Assessment (HTA) Unit, Regional Health Service, ESTAR-Tuscany Region, Florence, Italy.
4 Department of Internal Medicine, Centre for Systemic Manifestations of Hepatitis Viruses, University of Florence, Largo Brambilla 3, Florence, Italy.