[1
]
Division of Gastroenterology and Hepatology, University Hospital Zürich, Switzerland
and Swiss HPB Centre.
[2
]
Division of Gastroenterology and Hepatology, Hospital St Gallen, Switzerland.
[3
]
Epatocentro Ticino, Lugano, Switzerland.
[4
]
Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zürich,
Switzerland / Institute of Medical Virology, University of Zurich, Switzerland.
[5
]
Department of Biostatistics and Epidemiology, Biostatistics and Prevention Institute,
University of Zurich, Switzerland.
[6
]
Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zürich,
Switzerland.