1 Center for Tropical Diseases, Ospedale Sacro-Cuore Don Calabria, Negrar, Verona, Italy.
2 Infectious Diseases Unit, Department of Medical and Surgical Sciences, Ospedale S. Orsola-Malpighi, Alma Mater Studiorum University of Bologna, Bologna, Italy.
3 Center for Tropical Diseases, Ospedale Sacro-Cuore Don Calabria, Negrar, Verona, Italy; Acute and Chronic Viral Hepatitis Department, Seconda Università degli Studi di Napoli, Naples, Italy.
4 Department of Pathology, Ospedale Sacro-Cuore Don Calabria, Negrar, Verona, Italy.