1 Liver Intensive Care Unit, University Hospitals National Health Service Foundation Trust, Birmingham B15 2GW, UK; Birmingham Liver Failure Research Group, Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK. Electronic address: mansoor.bangash@uhb.nhs.uk.
2 Liver Intensive Care Unit, University Hospitals National Health Service Foundation Trust, Birmingham B15 2GW, UK; Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK.