1. Department of Cardiology Sakakibara Heart Institute Tokyo Japan
2. Department of Cardiology Hirosaki University Graduate School of Medicine Hirosaki Japan
3. Department of Cardiology Kawasaki Saiwai Hospital Kawasaki Japan
4. Department of Anesthesiology Sakakibara Heart Institute Tokyo Japan
5. Department of Cardiovascular Surgery Sakakibara Heart Institute Tokyo Japan
6. Department of Cardiology, Pulmonology, and Nephrology Yamagata University School of Medicine Yamagata Japan
7. Department of Cardiovascular Medicine Juntendo University School of Medicine Tokyo Japan