1. Department of Clinical and Laboratory Medicine, Faculty of Medicine, University of Yamanashi, Chuo, Japan;
2. School of Medical Technology, Faculty of Health Science, Gumma Paz University, Takasaki, Japan;
3. Department of Biomedical Engineering, Oregon Health & Science University, Portland, OR;
4. Infection Control Unit, University of Yamanashi Hospital, Chuo, Japan;
5. Faculty of Life and Environmental Science, University of Yamanashi, Kofu, Japan;
6. Collaboration Promotion Unit, Global Research Cluster, and
7. Liver Cancer Prevention Research Unit, Center for Integrative Medical Sciences, RIKEN, Wako, Japan; and
8. Fuefuki Chuo Hospital, Fuefuki, Japan