Affiliation: | 1. Department of Cardiology, St Luke''s International Hospital, Tokyo, Japan;2. Department of Cardiology, Keio University School of Medicine, Tokyo, Japan;3. Department of Healthcare Quality Assessment, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan;4. Department of Cardiology, Tokyo Dental University, Ichikawa, Japan;5. Department of Cardiology, Yokohama Municipal Hospital, Yokohama, Japan |