1. Department of General Surgical Science, Graduate School of Medicine, Gunma University, Maebashi 371-8510, Japan
2. Division of Integrated Oncology Research, Gunma University, Initiative for Advanced Research (GIAR), Maebashi 371-8511, Japan
3. Department of Surgery Japanese Red Cross Maebashi Hospital, Maebashi 371-0811, Japan
4. Department of Human Pathology, Graduate School of Medicine, Juntendo University, Bunkyo-ku 113-8431, Japan
5. Department of Radiation Oncology, Graduate School of Medicine, Gunma University, Maebashi 371-8510, Japan
6. Division of Molecular Oncological Pharmacy, Faculty of Pharmacy, Keio University, Minato-ku 108-8345, Japan