1. Department of Cardiology, Keio University School of Medicine
2. Department of Cardiology, Fujita Health University Bantane Hospital
3. Department of Cardiology, Japanese Red Cross Ashikaga Hospital
4. Department of Cardiology, Kokura Memorial Hospital
5. Department of Cardiology, Aichi-Medical University
6. Department of Cardiovascular Medicine, Tokai University
7. Division of Cardiovascular Medicine, Toho University Ohashi Medical Center