1. Department of Pathology University of Tsukuba Hospital Ibaraki Japan
2. Doctoral Program in Biomedical Sciences, Graduate School of Comprehensive Human Sciences University of Tsukuba Ibaraki Japan
3. Department of Diagnostic Pathology, Faculty of Medicine University of Tsukuba Ibaraki Japan
4. Tsukuba Human Tissue Diagnostic Center University of Tsukuba Hospital Ibaraki Japan