1 National Institute for Health Research Liver Biomedical Research Unit, University Hospitals Birmingham NHS Foundation Trust and the University of Birmingham, Birmingham B15 2TT, UK. Electronic address: P.n.newsome@bham.ac.uk.
2 National Institute for Health Research Liver Biomedical Research Unit, University Hospitals Birmingham NHS Foundation Trust and the University of Birmingham, Birmingham B15 2TT, UK.
3 Medical Research Council Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, UK.