1. Department of Surgery, Graduate School of Medicine, Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 6068507, Japan
2. Department of Medical Life System, Faculty of Life and Medical Science, Doshisha University, 1-3 Tatara Miyakodani, Kyotanabe city, Kyoto 610-0394 Japan