1. Department of Gastroenterology, The Research Center for Hepatitis and Immunology, Research Institute, National Center for Global Health and Medicine, Chiba, Japan
2. Department of Surgery, National Center for Global Health and Medicine, Tokyo, Japan
3. Department of Computational Biology and Medical Sciences, Graduate School of Frontier Science, The University of Tokyo, Chiba, Japan
4. Medical Research Support Center, Graduate School of Medicine, Kyoto University, Kyoto, Japan
5. Integrated Database Unit, Advanced Center for Computing and Communication (ACCC), RIKEN, Saitama, Japan
6. Pathology Division of Clinical Laboratory, National Center for Global Health and Medicine, Tokyo, Japan
7. Cooperative Major in Advanced Health Science, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan