118 Aya Saito1, Noboru Motomura, Shinichi Ozaki, Osamu Hattori, Michiko Seki, Yuji Sanpei, Sumihito Tamura, Minoru Ono, 1Department of Cardiothoracic Surgery, the University of Tokyo, Faculty of Medicine, Tokyo, Japan, 2University of Tokyo Tissue Bank, Tokyo, Japan.