1. Department of Stroke and Cerebrovascular Medicine Hirosaki University Graduate School of Medicine Hirosaki Japan
2. Department of Nursing Science Hirosaki University Graduate School of Health Science Hirosaki Japan
3. Department of Biomolecular Science Fukushima Medical University School of Medicine Fukushima Japan
4. Department of Cardiology Hirosaki University Graduate School of Medicine Hirosaki Japan
5. Division of Cardiology Saiseikai Kumamoto Hospital Kumamoto Japan