Affiliation: | 1. Department of Cardiology, Keio University School of Medicine, Tokyo, Japan;2. Department Healthcare Quality Assessment, University of Tokyo, Tokyo, Japan;3. Department of Cardiology, Saiseikai Utsunomiya Hospital, Utsunomiya, Japan;4. Department of Cardiology, National Hospital Organization Saitama National Hospital, Saitama, Japan;5. Department of Cardiology, Yokohama Municipal Citizen''s Hospital, Yokohama, Japan;6. Department of Cardiology, Saiseikai Central Hospital, Tokyo, Japan;g Department of Cardiology, Cardiovascular Center, St Luke''s International Hospital, Tokyo, Japan;h Division of Health Services Research, Center for Cancer Control and Information Services, National Cancer Center, Tokyo, Japan |