1. Department of Biomedical Engineering, Graduate School of Medicine, Kyushu University, Fukuoka, Japan and Department of Cardiac Surgery, Graduate School of Medicine, Kyushu University, Fukuoka, Japan
2. Department of Biomedical Engineering, National Cardiovascular Center Research Institute, Osaka, Japan
3. Department of Cardiac Surgery, Graduate School of Medicine, Kyushu University, Fukuoka, Japan
4. Department of Biomedical Engineering, Graduate School of Medicine, Kyushu University, Fukuoka, Japan