1. Department of Cardiovascular Medicine Tohoku Medical and Pharmaceutical University Sendai Japan
2. Department of Cardiology Fujita Health University Toyoake Japan
3. Department of Hematology and Rheumatology Tohoku Medical and Pharmaceutical University Sendai Japan
4. Department of Emergency and Disaster Medicine Tohoku Medical and Pharmaceutical University Sendai Japan
5. Department of Cardiovascular Surgery Tohoku Medical and Pharmaceutical University Sendai Japan