1. Department of Tumor Biology, Norwegian Radium Hospital, Oslo University Hospital, 0424 Oslo, Norway
2. Institute of Clinical Medicine, University of Oslo, 0310 Oslo, Norway
3. Department of Pathology, Norwegian Radium Hospital, Oslo University Hospital, 0424 Oslo, Norway
4. Department of Gynecologic Oncology, Norwegian Radium Hospital, Oslo University Hospital, 0424 Oslo, Norway
5. Department of Gastroenterological Surgery, Norwegian Radium Hospital, Oslo University Hospital, 0424 Oslo, Norway