1. Department of Surgery and Oncology, Graduate School of Medical Sciences Kyushu University Fukuoka Japan
2. Department of Digestive Surgery, Graduate School of Medical and Dental Sciences Kagoshima University Kagoshima Japan
3. Department of Gastrointestinal and Pediatric Surgery Tokyo Medical University Tokyo Japan
4. Department of Surgery, Nippon Medical School Chiba Hokusoh Hospital Chiba Japan
5. Department of Surgery Teikyo University School of Medicine Tokyo Japan
6. Department of Surgery and Science, Graduate School of Medical Sciences Kyushu University Fukuoka Japan
7. Department of Emergency Medicine, Graduate School of Medical Sciences Kyushu University Fukuoka Japan
8. Kyushu University