1. Department of General, Visceral and Transplantation Surgery, the
2. Department of Surgery, North Shore University Hospital, Manhasset, New York
3. Department of Gastroenterology and Hepatology, the
4. Department of Medical Oncology, the
5. Department of Radiotherapy, and the
6. Institute of Pathology and Neuropathology, University Hospital Essen, Essen, Germany;