1. Department of Hepatobiliary, Pancreatic and Transplant Surgery, Freeman Hospital Newcastle University NHS Trust Hospitals Newcastle‐Upon‐Tyne UK
2. Institute of Cellular Medicine University of Newcastle Newcastle‐Upon‐Tyne UK
3. Department of Medicine, College of Medical and Dental Sciences University of Birmingham Birmingham UK
4. Department of Hepatobiliary and Pancreatic Surgery Queen Elizabeth Hospital Birmingham Birmingham UK
5. Clinical Surgery Edinburgh Royal Infirmary Edinburgh UK