1. St Mark’s Hospital and Academic Institute Harrow UK
2. Department of Surgery and Cancer Imperial College London London UK
3. Salhgrenska University Hospital Gothenburg Sweden
4. Akershus University Hospital Oslo Norway
5. Institute of Clinical Medicine University of Oslo Oslo Norway
6. Department of Surgery Linköping University Hospital Linköping Sweden
7. Department of Biomedical and Clinical Sciences Linköping University Linköping Sweden