1. Department of Cardiovascular SurgeryNagoya Heart Center Nagoya Japan
2. Department of CardiologyNagoya Heart Center Nagoya Japan
3. Department of CardiologyToyohashi Heart Center Toyohashi Japan
4. Department of CardiologyTeikyo University School of Medicine Tokyo Japan
5. Department of CardiologySendai Kosei Hospital Sendai Japan
6. Department of CardiologyNew Tokyo Hospital Chiba Japan
7. Department of CardiologySaiseikai Yokohama City Eastern Hospital Yokohama Japan
8. Department of CardiologySyonan Kamakura General Hospital Kanagawa Japan
9. Department of Cardiovascular MedicineOsaka City University Graduate School of Medicine Osaka Japan
10. Department of Cardiovascular SurgeryTokyo Bay Urayasu‐Ichikawa Medical Center Chiba Japan
11. Department of CardiologyToyama University Hospital Toyama Japan
12. Department of CardiologyOgaki Municipal Hospital Japan
13. Department of CardiologyKishiwada Tokushukai Hospital Osaka Japan
14. Department of CardiologyKokura Memorial Hospital Kokura Japan
15. Department of CardiologyKeio University School of Medicine Tokyo Japan