1. Laboratory of Pharmacology & Toxicology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
2. Laboratory of DNA Damage Signaling, Chiba Cancer Center Research Institute, Chiba, Japan
3. Department of Gastrointestinal Surgery, Chiba Cancer Center, Chiba, Japan
4. Research Institute for Clinical Oncology, Saitama Cancer Center, Saitama, Japan
5. Department of Pharmacology, Graduate School of Medicine, Chiba University, Chiba, Japan