1. Division of Organ Transplantation Department of Surgery University of Massachusetts Memorial Hospital University of Massachusetts Worcester MA
2. Swiss HPB and Transplantation Center Department of Surgery and Transplantation University Hospital Zurich Zurich Switzerland
3. Liver Failure Group UCL Institute for Liver and Digestive Health UCL Medical School Royal Free Campus London UK
4. Division of Hepatobiliary Surgery and Liver Transplantation University of Pisa Medical School Hospital Pisa, Tuscany Italy