1. Department of Cardiology Keio University School of Medicine Tokyo Japan
2. Department of Cardiovascular Medicine Kyorin University Faculty of Medicine 6‐20‐2, Shinkawa, Mitaka Tokyo Japan
3. Department of Neuropsychiatry Keio University School of Medicine Tokyo Japan
4. Institute for Integrated Sports Medicine Keio University School of Medicine Tokyo Japan
5. Department of Cardiology National Defense Medical College Saitama Japan