1. Department of Cardiology and Geriatrics, Kochi Medical School, Kochi University
2. Department of Cardiology, Chikamori Hospital
3. Department of Cardiology, Kochi Health Sciences Center
4. Department of Cardiology, Japanese Red Cross Kochi Hospital
5. Department of Cardiology, Tosa Municipal Hospital
6. Department of Cardiology, Susaki Kuroshio Hospital
7. Department of Cardiology, Kochi Prefectural Aki General Hospital
8. Department of Cardiology, Kochi Prefectural Hata Kenmin Hospital