1. Department of Digestive Surgery, Breast and Thyroid Surgery; Kagoshima University; Kagoshima
2. Department of Surgery; Kurume University School of Medicine; Fukuoka Japan
3. Department of Gastroenterological Surgery; National Hospital Organization Kyushu Cancer Center; Fukuoka Japan
4. Department of Surgery and Science; Kyushu University; Fukuoka Japan
5. Department of Clinical Radiology; Kyushu University; Fukuoka Japan
6. Department of Gastroenterological Surgery; Kumamoto University; Kumamoto Japan