1. Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton General Hospital, Tremona Road, Southampton S016 6YD, UK.
2. Section of Hepatology, Division of Medicine, Imperial College London, South Wharf Road, London W2 1PG, UK.
3. Medical Research Council–University of Glasgow Centre for Virus Research, Garscube Campus, 464 Bearsden Road, Glasgow G61 1QH, UK.
4. Department of Translational Medicine, Università del Piemonte Orientale, Novara, Italy.
5. Department of Statistics, Population and Primary Care Medicine, Faculty of Medicine, University of Southampton, Southampton General Hospital, Tremona Road, Southampton S016 6YD, UK.
6. Department of Medicine, University College Cork, Cork, Ireland.
7. Department of Immunohematology and Blood Transfusion, Leiden University Medical Center, PO Box 9600, 2300RC Leiden, Netherlands.
8. School of Cellular and Molecular Medicine, Biomedical Sciences Building, University of Bristol, Bristol BS8 1TD, UK.