1. Division of Rehabilitation Sapporo Medical University Hospital Sapporo Japan
2. Department of Rehabilitation Sapporo Cardiovascular Hospital Sapporo Japan
3. Department of Cardiovascular, Renal and Metabolic Medicine Sapporo Medical University School of Medicine Sapporo Japan
4. Department of Cardiology Hokkaido Cardiovascular Hospital Sapporo Japan
5. Division of Health Care Administration and Management Sapporo Medical University School of Medicine Sapporo Japan
6. Second Division of Physical Therapy Sapporo Medical University School of Health Sciences Sapporo Japan