1. Department of Cardiovascular Surgery, Nippon Medical School, Tokyo, Japan.
2. Department of Cardiovascular Medicine, Nippon Medical School, Tokyo, Japan.
3. Department of Integrated Diagnostic Pathology, Nippon Medical School, Tokyo, Japan.
4. Kanagawa Dental University, Graduate School of Dentistry, Department of Oral Functional & Restoration, Division of Periodontology, Kanagawa, Japan.
5. Department of Diagnostic Pathology, Nippon Medical School Hospital, Tokyo, Japan.
6. Department of Biomaterials, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan.