1. Department of Surgery Kyushu University Beppu Hospital Oita Japan
2. Department of Surgery and Oncology Graduate School of Medical Sciences Kyushu University Fukuoka Japan
3. Department of Bioscience and Bioinformatics Faculty of Computer Science and Systems Engineering Kyushu Institute of Technology Fukuoka Japan
4. Department of Clinical Laboratory Medicine Kyushu University Beppu Hospital Oita Japan
5. Department of Surgery Oita Prefectural Hospital Oita Japan
6. Department of Digestive Surgery, Breast and Thyroid Surgery Kagoshima University Kagoshima Japan