1. Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University
2. Division of Cardiology, Teikyo University Hospital
3. Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, and National Cerebral and Cardiovascular Center
4. Fukuoka Sanno Hospital, Fukuoka, and International University of Health and Welfare
5. Toranomon Hospital
6. Life Science & Medical Bioscience, Faculty of Science and Engineering, Waseda University