1. Department of Cardiovascular Medicine JR Hiroshima Hospital Hiroshima Japan
2. Department of Cardiovascular Medicine Saga University Saga Japan
3. Department of Medical Statistics Osaka Metropolitan University Graduate School of Medicine Osaka Japan
4. Department of Cardiovascular Medicine Saiseikai Futsukaichi Hospital Fukuoka Japan
5. Department of Diabetes, Metabolism and Endocrinology Chiba University Hospital Chiba Japan
6. Department of Internal Medicine Nishio Municipal Hospital Nishio Aichi Japan
7. Department of Cardiology Nagoya Ekisaikai Hospital Nogaya Aichi Japan
8. Department of Cardiology Nagoya University Graduate School of Medicine Nagoya Aichi Japan