1. Department of Gastroenterological, Breast and Endocrine Surgery; Yamaguchi University Graduate School of Medicine; Ube Japan
2. Clinical Research Center; Shikoku Cancer Center, NHO; Matsuyama Japan
3. Department of Surgical Oncology; Osaka City University Graduate School of Medicine; Osaka Japan
4. Institute of Gastroenterology; Tokyo Women's Medical University; Tokyo Japan
5. Department of Surgical Oncology and Regulation of Organ Function; Miyazaki University School of Medicine; Miyazaki Japan
6. Department of Gastroenterological Surgery; Okayama University Graduate School of Medicine; Okayama Japan
7. Department of Digestive and Transplant Surgery; Tokushima University Graduate School of Medicine; Tokushima Japan
8. Department of Surgery; Tokyo Women's Medical University Medical Center East; Tokyo Japan
9. Department of Surgery; Ogori Dai-ichi General Hospital; Yamaguchi Japan
10. Department of Surgery; Kanmon Medical Center, NHO; Shimonoseki Japan
11. Department of Surgery; Shimonoseki Medical Center, JCHO; Shimonoseki Japan
12. Department of Pharmacy; Yamaguchi University Hospital; Ube Japan
13. Section of Hematology/Oncology; Department of Medicine; The University of Chicago; Chicago Illinois USA
14. Yamaguchi University; Yamaguchi Japan