1. Department of Medicine and Biological Science, Gunma University Graduate School of Medicine, Gunma, Japan
2. Department of Clinical Laboratory Medicine, Gunma University Graduate School of Medicine, Gunma, Japan
3. Department of General Medicine, Kanazawa Medical University, Uchinada, ishikawa, Japan
4. Cardiovascular Hospital of Central Japan, Gunma, Japan
5. Wakanyaku Medical Institute, Fujimi, Gunma, Japan