1. Division of Pathology and Clinical Laboratories, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
2. Medical Solutions Division, NEC Corporation, Minato-ku, Tokyo, Japan
3. Epidemiology and Prevention Group, Research Center for Cancer Prevention and Screening, National Cancer Center, Chuo-ku, Tokyo, Japan
4. Department of Machine Learning, NEC Laboratories America, Princeton, NJ, USA
5. Division of Molecular Pathology, National Cancer Center Research Institute, Chuo-ku, Tokyo, Japan
6. Division of Pathology, Research Center for Innovative Oncology, National Cancer Center, Kashiwa, Chiba, Japan