1. Clinic Tobu Railway Co. Ltd. Tokyo Japan
2. Department of Cardiology Nippon Medical School Tokyo Japan
3. Department of Cardiology and Clinical Examination Oita University Oita Japan
4. Department of Cardiology Fujita Health University Bantane Hospital Nagoya Japan
5. Department of Cardiology Toho University Medical Center Omori Hospital Tokyo Japan
6. Department of Medicine Kanazawa Medical University Himi Medical Center Himi Japan
7. Department of Pediatrics Saitama Medical University International Medical Center Saitama Japan
8. Department of Medical Education Nagoya City University Nagoya Japan
9. Graduate School of Medicine Dentistry and Pharmaceutical Sciences Okayama University Okayama Japan
10. Department of Cardiology Tokyo Medical & Dental University Tokyo Japan