1. Department of Cardiovascular Medicine, Shinshu University School of Medicine
2. Department of Cardiology, Nagano Red Cross Hospital
3. Department of Cardiology, Matsumoto Kyoritsu Hospital
4. Department of Cardiology, Saku Central Hospital
5. Department of Cardiology, Iida Municipal Hospital
6. Department of Cardiology, Shinonoi General Hospital
7. Department of Cardiology, Ina Central Hospital
8. Department of Cardiology, Nagano Municipal Hospital
9. Department of Cardiology, Hokushin General Hospital
10. Department of Cardiology, Komoro Kosei General Hospital
11. Department of Cardiology, Aizawa Hospital
12. Department of Cardiology, Azumino Red Cross Hospital
13. Department of Cardiology, Okaya Municipal Hospital
14. Department of Cardiology, Nagano Matsushiro General Hospital