1. Department of Cardiology, Itabashi Chuo Medical Center
2. Department of Cardiology, Shonan Oiso Hospital
3. Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University
4. Department of Cardiology, Tokyo General Hospital
5. Department of Cardiovascular Medicine, Nippon Medical School
6. Department of Cardiology, Tokyo Saiseikai Central Hospital
7. Cardiovascular Center, Kikuna Memorial Hospital
8. Department of General Medicine and Health Science, Nippon Medical School