1 Division of Surgery, CLINTEC, Karolinska Institute, Stockholm, Sweden.
2 Division of Surgery, CLINTEC, Karolinska Institute, Stockholm, Sweden; Division of Surgical Oncology, Department of Surgery, University of Colorado Anschutz Medical Campus, Denver, CO, USA. Electronic address: marco.delchiaro@ucdenver.edu.
3 Department of Pathology, Oslo University, Oslo, Norway.