1. Department of Cardiovascular Medicine Chiba University Graduate School of Medicine Chiba Japan
2. Department of Cardiovascular Medicine Saga University Saga Japan
3. Clinical and Translational Research Center Kobe University Hospital Kobe Japan
4. Department of Cardiology Fukuoka University School of Medicine Fukuoka Japan
5. Department of Cardiovascular Internal Medicine Tosei General Hospital Seto Japan
6. Division of Cardiology Saiseikai Kumamoto Hospital Kumamoto Japan