1. Department of Surgery and Transplantation, Swiss HPB & Transplant Center Zurich, University Hospital Zurich, Zurich, Switzerland
2. vivévis AG - visceral, tumor, and robotic surgery, Clinic Hirslanden Zurich, Zurich, Switzerland
3. Department of HPB Surgery and Liver Transplantation, Royal Free Hospital, London, UK
4. The Division of Surgery and Interventional Science, University College London, London, UK