1. Department of Cardiology; Japanese Red Cross Ashikaga Hospital; Ashikaga Japan
2. Duke Clinical Research Institute, Duke University Medical Center; Durham North Carolina
3. Department of Cardiology; Keio University School of Medicine; Tokyo Japan
4. Department of Cardiology; Nagoya University Graduate School of Medicine; Nagoya Japan
5. Division of Cardiology; Kokura Memorial Hospital; Japan
6. Department of Nephrology; Japanese Red Cross Ashikaga Hospital; Ashikaga Japan
7. Department of Cardiology; Kawasaki Medical School; Kurashiki Japan
8. Department of Cardiology; Kurashiki Central Hospital; Kurashiki Japan
9. Department of Cardiology; Aichi Medical University; Nagakute Japan
10. Division of Cardiovascular Medicine; Toho University Ohashi Medical Center; Tokyo Japan