1. Department of Pathology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research (JFCR) , Tokyo, 135-8550, Japan
2. Department of Human Pathology, Tokyo Medical and Dental University Graduate School of Medical and Dental Sciences , Tokyo, 113-8519, Japan
3. Division of Pathology, The Cancer Institute, JFCR , Tokyo, 135-8550, Japan
4. Department of Medical Oncology, Cancer Institute Hospital, JFCR , Tokyo, 135-8550, Japan
5. Department of Clinical Chemotherapy, Cancer Chemotherapy Center, JFCR , Tokyo, 135-8550, Japan
6. Graduate School of Engineering, Chiba Institute of Technology , Chiba, 275-0016, Japan
7. Division of Hepatobiliary-Pancreatic Surgery, Cancer Institute Hospital, JFCR , Tokyo, 135-8550, Japan
8. Department of Pathology, Jichi Medical University , Tochigi, 329-0498, Japan