1. Hidamarinooka Nakamura Medical Clinic
2. Clinical Research Support Center, Mie University Hospital
3. Department of Cardiovascular Surgery, Yamagata Saisei Hospital
4. Division of Cardiology, Department of Medicine, Nihon University School of Medicine
5. Department of Cardiology, Division of Pulmonary Circulation, National Cerebral and Cardiovascular Center
6. Department of Cardiovascular Surgery, Kitasato University Hospital
7. Department of Cardiology, Okayama Rosai Hospital
8. Department of Cardiology, Eniwa Hospital
9. Department of Vascular Surgery, Kamiichi General Hospital
10. Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine
11. Division of Cardiovascular Intensive Care, Nippon Medical School Hospital
12. Department of Cardiovascular Surgery, Fukushima Medical University Hospital
13. Department of Cardiology, Musashino Red Cross Hospital
14. Department of Cardiology, Kuwana City Medical Center