1. Department of General Surgical Science Gunma University Graduate School of Medicine Maebashi Japan
2. Fukuoka City Hospital Fukuoka Japan
3. Division of Integrated Oncology Research Gunma University Initiative for Advanced Research (GIAR) Maebashi Japan
4. Department of Pathology Maebashi Red Cross Hospital Maebashi Japan
5. Department of Surgery Maebashi Red Cross Hospital Maebashi Japan