1. Department of Cardiovascular Surgery Graduate School of Medical Science Kyoto Prefectural University of Medicine Kyoto Japan
2. Department of Cardiovascular Surgery Japanese Red Cross Kyoto Daiichi Hospital Kyoto Japan
3. Department of General and Cardiothoracic Surgery Graduate School of Medicine Gifu University Gifu Japan
4. Department of Regenerative Medicine Kyoto Prefectural University of Medicine Kyoto Japan