1 Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, 69120 Heidelberg, Germany. Electronic address: john.neoptolemos@med.uni-heidelberg.de.
2 Department of Medical Oncology, National Center for Tumor Diseases, Heidelberg University Hospital, Heidelberg, Germany.
3 Department of Diagnostics and Intervention Oncology, and Wallenberg Centre for Molecular Medicine, Umeå University, Umeå, Sweden.
4 Digestive and Medical Oncology, Hôpital Paul Brousse, Villejuif, France.
5 Cancer Research UK Liverpool Experimental Cancer Medicine Centre, University of Liverpool, Liverpool, UK.