1. Department of CardiologyTokyo Women's Medical University 8‐1 Kawada‐cho, Shinjuku‐ku Tokyo 162‐8666 Japan
2. Department of CardiologyTokyo Women's Medical University Yachiyo Medical Center Yachiyo Japan
3. Department of CardiologyNational Yokohama Medical Center Yokohama Japan
4. Department of CardiologySaiseikai Kurihashi Hospital Kuki Japan
5. Department of CardiologyCardiovascular Center of Sendai Sendai Japan
6. Department of CardiologySeirei Hamamatsu General Hospital Hamamatsu Japan
7. Department of CardiologyTokyo Metropolitan Tama Medical Center Fuchu Japan
8. Department of CardiologyTama‐Hokubu Medical Center Higashimurayama Japan
9. Department of CardiologyJCHO Sagamino Hospital Sagamihara Japan
10. Department of CardiologyShinmatsudo Central General Hospital Matsudo Japan
11. Department of Cardiology and PneumologyUniversity Medical Center Göttingen and DZHK (German Center for Cardiovascular Research) Göttingen Germany
12. Institute of GeriatricsTokyo Women's Medical University Tokyo Japan