1. Department of Surgery, Kyushu University Beppu Hospital, Beppu, Japan
2. Department of Surgery, Jikei University School of Medicine, Tokyo, Japan
3. Department of Surgery, Teikyo University, Tokyo, Japan
4. Human Genome Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan
5. Department of Pathology, Kyushu University Beppu Hospital, Beppu, Japan
6. Division of Molecular and Cellular Medicine, National Cancer Center Research Institute, Tokyo, Japan