1. School of Cancer Studies, Institute of Translational Medicine, University of Liverpool, Liverpool, UK
2. Northwestern Hepatobiliary Unit, Aintree University Hospital, Liverpool, UK
3. Division of Surgery, MD Anderson Cancer Center, Houston, Texas, USA
4. Assistance Publique–Hôpitaux de Paris Hôpital Paul Brousse, Centre Hépato-Biliaire, Université Paris-Sud, Unité Mixte de Recherche en Santé 776, Villejuif, France
5. Department of Hepatobiliary Surgery, Basingstoke and North Hampshire NHS Foundation Trust, Basingstoke, UK
6. Department of Hepatobiliary Surgery, University Hospital Wales, Heath Park, Cardiff, UK
7. Liverpool Cancer Trials Unit, University of Liverpool, Liverpool, UK